Akki Blizzard-Herder (Card)

Akki Blizzard-Herder
In 2000 decks 0% of 2480648 decks
Alejandro Fuentes
Pauper Commander - Mayhem in the Streets
Alejandro tries putting a Mayhem Devil at the helm of an Commander old deck, turning from a sludgy mess to an engine of mayhem!
Kya Vess
Mar 3, 2020
Combining Hobbies - Dungeon Masters, Jokulhaups and You
Some Dungeon Masters are benevolent. Others turn the very land against you!
Archidekt
Commander Spellbook
Moxfield
Scryfall
MTGStocks
Zo-Zu the Punisher
46.72% of 2091 decks 977 decks
Svella, Ice Shaper
9.97% of 2628 decks 262 decks
Krenko, Mob Boss
0.41% of 23214 decks 96 decks
Klothys, God of Destiny
2.79% of 1865 decks 52 decks
The Balrog, Durin's Bane
1.69% of 1955 decks 33 decks
Hazezon, Shaper of Sand
0.36% of 7844 decks 28 decks
Kibo, Uktabi Prince
0.28% of 9497 decks 27 decks
Lord Windgrace
0.25% of 9211 decks 23 decks
Soul of Windgrace
0.65% of 2936 decks 19 decks
Korvold, Fae-Cursed King
0.12% of 15603 decks 18 decks
Numot, the Devastator
1.46% of 891 decks 13 decks
Erinis, Gloom Stalker // Street Urchin
0.89% of 1240 decks 11 decks
Alesha, Who Smiles at Death
0.17% of 5893 decks 10 decks
Juri, Master of the Revue
0.19% of 5405 decks 10 decks
Muxus, Goblin Grandee
0.62% of 1620 decks 10 decks
Zoyowa Lava-Tongue
0.64% of 1571 decks 10 decks
Ragavan, Nimble Pilferer
0.30% of 2964 decks 9 decks
Wort, Boggart Auntie
0.48% of 1893 decks 9 decks
New Cards
Walk-In Closet // Forgotten Cellar
41% of 22 decks +29% synergy
Razorkin Needlehead
33% of 204 decks +25% synergy
Enduring Innocence
28% of 29 decks +17% synergy
Living Phone
27% of 15 decks +25% synergy
Dazzling Theater // Prop Room
25% of 12 decks +9% synergy
High Synergy Cards
Conduit of Worlds
68% of 354 decks +62% synergy
Tremble
55% of 2000 decks +55% synergy
Impending Disaster
55% of 2000 decks +54% synergy
Waking the Trolls
51% of 558 decks +51% synergy
Wildfire
51% of 2000 decks +51% synergy
Dingus Egg
51% of 2000 decks +51% synergy
Ankh of Mishra
51% of 2000 decks +51% synergy
Manabarbs
52% of 2000 decks +50% synergy
The Mending of Dominaria
51% of 561 decks +49% synergy
Acidic Slime
53% of 561 decks +49% synergy
Top Cards
Fire Diamond
49% of 2000 decks +44% synergy
Ramunap Excavator
49% of 561 decks +42% synergy
Mind Stone
49% of 2000 decks +32% synergy
Stoneshaker Shaman
48% of 1997 decks +48% synergy
Price of Glory
46% of 2000 decks +45% synergy
Vandalblast
46% of 1996 decks +30% synergy
Armageddon
45% of 143 decks +44% synergy
Chaos Warp
45% of 1996 decks +13% synergy
Goblin Anarchomancer
45% of 558 decks +31% synergy
Harmonize
45% of 561 decks +36% synergy
Creatures
Goblin Boarders
60% of 5 decks +50% synergy
Accursed Marauder
45% of 65 decks +36% synergy
Harsh Mentor
43% of 1993 decks +41% synergy
Sunspine Lynx
43% of 334 decks +40% synergy
Torbran, Thane of Red Fell
41% of 1952 decks +38% synergy
Keldon Firebombers
41% of 2000 decks +41% synergy
Terastodon
41% of 561 decks +37% synergy
Titania, Protector of Argoth
39% of 561 decks +36% synergy
Iron Myr
38% of 2000 decks +35% synergy
Rime Tender
38% of 560 decks +38% synergy
Solphim, Mayhem Dominus
38% of 1473 decks +33% synergy
Krenko's Buzzcrusher
36% of 747 decks +36% synergy
Llanowar Elves
35% of 562 decks +14% synergy
Wort, the Raidmother
35% of 561 decks +35% synergy
Cemetery Gatekeeper
34% of 1835 decks +33% synergy
Ignoble Hierarch
34% of 106 decks +8% synergy
The Gitrog Monster
34% of 107 decks +28% synergy
Roxanne, Starfall Savant
34% of 164 decks +30% synergy
Yuma, Proud Protector
32% of 28 decks +31% synergy
Invader Parasite
32% of 1996 decks +32% synergy
Heartless Hidetsugu
32% of 2000 decks +30% synergy
Scytheclaw Raptor
31% of 911 decks +29% synergy
Timeless Witness
31% of 558 decks +28% synergy
Elvish Mystic
29% of 561 decks +12% synergy
Rug of Smothering
28% of 1779 decks +28% synergy
Ojer Axonil, Deepest Might
27% of 979 decks +25% synergy
Dwarven Blastminer
27% of 2000 decks +27% synergy
Orcish Lumberjack
27% of 562 decks +25% synergy
Dwarven Miner
27% of 2000 decks +26% synergy
Treasure Nabber
26% of 1967 decks +24% synergy
Mossborn Hydra
25% of 12 decks +14% synergy
Mayhem Devil
25% of 248 decks +15% synergy
Magus of the Moon
24% of 1996 decks +23% synergy
Dwarven Driller
24% of 2000 decks +24% synergy
Enduring Vitality
24% of 29 decks +6% synergy
Sarinth Greatwurm
24% of 460 decks +24% synergy
Splitskin Doll
24% of 25 decks +22% synergy
Orcish Settlers
24% of 2000 decks +24% synergy
Braids, Arisen Nightmare
23% of 233 decks +15% synergy
World Shaper
22% of 561 decks +19% synergy
Lavinia, Azorius Renegade
22% of 45 decks +19% synergy
Tunnel Ignus
22% of 1996 decks +22% synergy
Twinflame Tyrant
22% of 77 decks +11% synergy
Detritivore
22% of 1996 decks +22% synergy
Arabella, Abandoned Doll
22% of 23 decks +13% synergy
Eternal Witness
22% of 562 decks +1% synergy
Aesi, Tyrant of Gyre Strait
21% of 28 decks +15% synergy
The Jolly Balloon Man
21% of 29 decks +14% synergy
Soul of Windgrace
20% of 98 decks +19% synergy
Grand Arbiter Augustin IV
20% of 45 decks +16% synergy
Instants
Counterspell
40% of 80 decks -3% synergy
Beast Within
38% of 561 decks -0% synergy
Price of Progress
36% of 2000 decks +34% synergy
Swords to Plowshares
36% of 143 decks -27% synergy
Thrill of Possibility
35% of 1952 decks +25% synergy
Path to Exile
31% of 141 decks -15% synergy
Boros Charm
28% of 141 decks +3% synergy
Once and Future
27% of 560 decks +27% synergy
Demand Answers
25% of 797 decks +18% synergy
Generous Gift
24% of 140 decks -2% synergy
Seething Song
22% of 2000 decks +16% synergy
Reverberate
22% of 1996 decks +19% synergy
Heroic Intervention
22% of 561 decks -8% synergy
Withering Torment
22% of 32 decks +3% synergy
Assassin's Trophy
21% of 107 decks -9% synergy
Deadly Dispute
21% of 243 decks +10% synergy
Permission Denied
20% of 15 decks +17% synergy
Harrow
20% of 562 decks +10% synergy
Terminate
20% of 249 decks -1% synergy
Abrade
20% of 1989 decks +8% synergy
Teferi's Protection
19% of 141 decks -1% synergy
Dawn's Truce
19% of 37 decks +4% synergy
Corrupted Conviction
18% of 174 decks +13% synergy
Red Elemental Blast
18% of 2000 decks +12% synergy
Village Rites
18% of 247 decks +8% synergy
Dovin's Veto
18% of 45 decks -1% synergy
Cyclonic Rift
18% of 79 decks -10% synergy
Big Score
17% of 1799 decks +8% synergy
Negate
16% of 79 decks -6% synergy
Lightning Bolt
16% of 2000 decks +5% synergy
Crop Rotation
15% of 562 decks +5% synergy
Arcane Denial
15% of 80 decks -5% synergy
Faith's Reward
15% of 141 decks +14% synergy
Boil
15% of 2000 decks +15% synergy
Untimely Malfunction
14% of 174 decks -1% synergy
Growth Spiral
14% of 28 decks -8% synergy
Rakdos Charm
14% of 248 decks -0% synergy
An Offer You Can't Refuse
14% of 71 decks -7% synergy
Dark Ritual
14% of 249 decks -8% synergy
Swan Song
14% of 79 decks -3% synergy
Wild Magic Surge
14% of 1779 decks +11% synergy
Goblin Surprise
13% of 60 decks +11% synergy
Entish Restoration
13% of 285 decks +5% synergy
Bulk Up
13% of 30 decks +3% synergy
Deflecting Swat
13% of 1940 decks -3% synergy
Sheoldred's Edict
13% of 197 decks +10% synergy
Sunder
12% of 80 decks +12% synergy
Volcanic Offering
12% of 1995 decks +11% synergy
Smashing Success
12% of 1920 decks +11% synergy
Pyroblast
11% of 2000 decks +5% synergy
Sorceries
Pillage
43% of 2000 decks +43% synergy
Creeping Mold
43% of 562 decks +43% synergy
Ruination
42% of 2000 decks +42% synergy
Blasphemous Edict
42% of 12 decks +8% synergy
Blasphemous Act
41% of 1996 decks +7% synergy
Boltwave
40% of 30 decks +22% synergy
Roiling Terrain
40% of 1996 decks +40% synergy
Reclaiming Vines
38% of 561 decks +38% synergy
Splendid Reclamation
38% of 561 decks +34% synergy
Winter's Grasp
37% of 562 decks +37% synergy
Molten Rain
36% of 2000 decks +35% synergy
Decimate
35% of 562 decks +26% synergy
Epicenter
34% of 2000 decks +34% synergy
Cleansing Wildfire
33% of 1935 decks +33% synergy
From the Ashes
32% of 1996 decks +32% synergy
Regrowth
32% of 562 decks +29% synergy
Thoughts of Ruin
29% of 1999 decks +29% synergy
Wreak Havoc
29% of 561 decks +29% synergy
Tectonic Break
28% of 2000 decks +28% synergy
Dryad's Revival
28% of 543 decks +28% synergy
Stone Rain
28% of 2000 decks +28% synergy
Boom // Bust
27% of 1996 decks +27% synergy
Sundering Eruption
26% of 448 decks +22% synergy
Catastrophe
26% of 143 decks +26% synergy
Faithless Looting
25% of 1996 decks +9% synergy
Tsunami
24% of 562 decks +24% synergy
Smallpox
24% of 248 decks +24% synergy
Seismic Spike
24% of 1997 decks +24% synergy
Worldsoul's Rage
23% of 196 decks +20% synergy
Jeska's Will
23% of 1925 decks +6% synergy
Cultivate
22% of 561 decks -24% synergy
Wake of Destruction
21% of 2000 decks +21% synergy
Desecration Plague
20% of 561 decks +20% synergy
Grab the Prize
19% of 165 decks +13% synergy
Icefall
19% of 1997 decks +19% synergy
Casualties of War
19% of 107 decks +14% synergy
Destructive Force
18% of 1996 decks +18% synergy
Ravages of War
17% of 143 decks +17% synergy
Rampant Growth
17% of 562 decks -17% synergy
Innocent Blood
17% of 249 decks +17% synergy
Obliterate
17% of 2000 decks +17% synergy
Restock
17% of 562 decks +17% synergy
Bend or Break
17% of 2000 decks +17% synergy
Vindicate
17% of 47 decks +11% synergy
By Force
17% of 1993 decks +16% synergy
Mwonvuli Acid-Moss
17% of 561 decks +16% synergy
Wrath of God
15% of 143 decks +9% synergy
Tormenting Voice
15% of 1996 decks +13% synergy
Feed the Swarm
15% of 246 decks -3% synergy
Fatal Grudge
14% of 237 decks +13% synergy
Utility Artifacts
Crucible of Worlds
41% of 2000 decks +38% synergy
Ruby Medallion
35% of 2000 decks +32% synergy
Winter Moon
28% of 510 decks +27% synergy
Lightning Greaves
26% of 2000 decks +0% synergy
Storm Cauldron
21% of 2000 decks +21% synergy
Swiftfoot Boots
20% of 1996 decks -8% synergy
Banner of Kinship
14% of 43 decks +2% synergy
Hedron Archive
13% of 1995 decks +10% synergy
Winter Orb
12% of 2000 decks +12% synergy
Crawlspace
12% of 2000 decks +11% synergy
Bootleggers' Stash
11% of 490 decks +9% synergy
Ghirapur Orrery
11% of 1993 decks +11% synergy
Vexing Bauble
10% of 424 decks +9% synergy
Basilisk Collar
10% of 1996 decks +7% synergy
Mana Web
10% of 2000 decks +9% synergy
Mithril Coat
8% of 1130 decks +2% synergy
Meekstone
7% of 2000 decks +6% synergy
Mycosynth Lattice
6% of 2000 decks +6% synergy
God-Pharaoh's Statue
6% of 1963 decks +5% synergy
Bolas's Citadel
5% of 248 decks -4% synergy
Bident of Thassa
5% of 79 decks -1% synergy
Enchantments
Sulfuric Vortex
42% of 2000 decks +41% synergy
Blood Moon
40% of 2000 decks +37% synergy
War's Toll
36% of 1997 decks +35% synergy
Burning Earth
35% of 1996 decks +35% synergy
Tectonic Instability
34% of 2000 decks +34% synergy
Destructive Flow
28% of 108 decks +27% synergy
Furnace of Rath
26% of 2000 decks +25% synergy
Mechanized Warfare
25% of 1692 decks +23% synergy
Spellshock
20% of 2000 decks +19% synergy
Powerbalance
19% of 468 decks +17% synergy
Roiling Vortex
19% of 1935 decks +17% synergy
Fall of the Thran
19% of 140 decks +18% synergy
Citadel of Pain
18% of 2000 decks +18% synergy
Fiery Emancipation
18% of 1940 decks +14% synergy
Smothering Tithe
17% of 140 decks -8% synergy
Burning Sands
17% of 2000 decks +17% synergy
Undergrowth Recon
15% of 209 decks +14% synergy
Exploration
14% of 562 decks +6% synergy
Smoke
14% of 2000 decks +14% synergy
Stranglehold
14% of 1996 decks +13% synergy
Dictate of the Twin Gods
13% of 1996 decks +11% synergy
Propaganda
12% of 80 decks +1% synergy
Desert Warfare
12% of 82 decks +11% synergy
Desolation
12% of 249 decks +12% synergy
Warleader's Call
12% of 68 decks +1% synergy
Ghostly Prison
11% of 143 decks -0% synergy
City on Fire
11% of 1334 decks +6% synergy
Annie Joins Up
11% of 28 decks -7% synergy
Dollmaker's Shop // Porcelain Gallery
10% of 29 decks +6% synergy
Felidar Retreat
10% of 138 decks +3% synergy
Rhystic Study
10% of 80 decks -18% synergy
Anointed Procession
10% of 141 decks +1% synergy
Descent into Avernus
10% of 1779 decks +6% synergy
Revel in Riches
9% of 248 decks +6% synergy
Outpost Siege
9% of 1995 decks +7% synergy
Land Tax
9% of 143 decks +2% synergy
Spiteful Banditry
8% of 1154 decks +6% synergy
Pyrostatic Pillar
8% of 2000 decks +8% synergy
Grave Pact
8% of 249 decks +4% synergy
Riveteers Ascendancy
8% of 100 decks +3% synergy
Mana Vortex
8% of 80 decks +7% synergy
Mana Breach
8% of 80 decks +7% synergy
Mystic Remora
8% of 80 decks -10% synergy
Aura Fracture
7% of 143 decks +7% synergy
Phyrexian Arena
7% of 249 decks -8% synergy
Black Market Connections
7% of 235 decks -4% synergy
Artist's Talent
7% of 341 decks +4% synergy
Impact Tremors
7% of 1995 decks -3% synergy
Stasis
6% of 80 decks +6% synergy
Back to Basics
6% of 80 decks +5% synergy
Planeswalkers
Koth, Fire of Resistance
22% of 1488 decks +21% synergy
Lord Windgrace
13% of 107 decks +12% synergy
Teferi, Time Raveler
11% of 45 decks +5% synergy
Wrenn and Six
11% of 560 decks +9% synergy
Chandra, Torch of Defiance
11% of 1993 decks +8% synergy
Oko, Thief of Crowns
11% of 28 decks +5% synergy
Ajani Vengeant
11% of 141 decks +10% synergy
Koth of the Hammer
8% of 1996 decks +8% synergy
Narset of the Ancient Way
7% of 43 decks +4% synergy
Elspeth, Sun's Champion
6% of 141 decks +1% synergy
Narset, Parter of Veils
5% of 79 decks +0% synergy
Wrenn and Realmbreaker
5% of 336 decks +3% synergy
Utility Lands
Darksteel Citadel
43% of 2000 decks +39% synergy
Field of Ruin
35% of 1988 decks +33% synergy
Ghost Quarter
33% of 1997 decks +31% synergy
Strip Mine
31% of 2000 decks +28% synergy
Valakut, the Molten Pinnacle
24% of 1996 decks +22% synergy
Bojuka Bog
23% of 248 decks -8% synergy
Shefet Dunes
21% of 141 decks +21% synergy
Desert of the True
21% of 141 decks +20% synergy
Volatile Fault
20% of 848 decks +19% synergy
Wasteland
18% of 2000 decks +16% synergy
Memorial to War
13% of 1968 decks +13% synergy
Arena of Glory
12% of 408 decks +3% synergy
Boseiju, Who Endures
11% of 497 decks -8% synergy
Drownyard Temple
11% of 1995 decks +10% synergy
Forgotten Cave
10% of 2000 decks +5% synergy
Tectonic Edge
9% of 1996 decks +9% synergy
Otawara, Soaring City
8% of 72 decks -9% synergy
Argoth, Sanctum of Nature
8% of 460 decks +6% synergy
Academy Ruins
8% of 79 decks +3% synergy
Nykthos, Shrine to Nyx
7% of 1996 decks +2% synergy
War Room
7% of 1925 decks +0% synergy
Tranquil Thicket
7% of 562 decks +3% synergy
Cascading Cataracts
6% of 1993 decks +5% synergy
Desert of the Indomitable
6% of 561 decks +5% synergy
Phyrexian Tower
6% of 249 decks -3% synergy
Hashep Oasis
5% of 561 decks +4% synergy
Barren Moor
5% of 249 decks +2% synergy
Dust Bowl
5% of 2000 decks +5% synergy
Mana Artifacts
Sol Ring
81% of 2000 decks -4% synergy
Arcane Signet
67% of 1952 decks -5% synergy
Gruul Signet
49% of 561 decks +37% synergy
Commander's Sphere
34% of 1995 decks +19% synergy
Darksteel Ingot
32% of 2000 decks +31% synergy
Moss Diamond
29% of 562 decks +27% synergy
Boros Signet
28% of 142 decks +5% synergy
Rakdos Signet
28% of 248 decks -2% synergy
Talisman of Indulgence
24% of 249 decks -2% synergy
Orzhov Signet
24% of 46 decks -3% synergy
Thran Dynamo
24% of 2000 decks +19% synergy
Azorius Signet
22% of 45 decks -3% synergy
Izzet Signet
22% of 79 decks -7% synergy
Gilded Lotus
22% of 2000 decks +18% synergy
Glittering Stockpile
21% of 1799 decks +19% synergy
Talisman of Conviction
21% of 140 decks -2% synergy
Talisman of Progress
20% of 46 decks -4% synergy
Talisman of Hierarchy
20% of 46 decks -5% synergy
Talisman of Creativity
19% of 79 decks -10% synergy
Relic of Sauron
19% of 16 decks +8% synergy
Throne of Eldraine
17% of 1025 decks +15% synergy
Talisman of Impulse
17% of 562 decks +8% synergy
Fellwar Stone
16% of 2000 decks -5% synergy
Raugrin Crystal
16% of 43 decks +15% synergy
Coldsteel Heart
14% of 1997 decks +13% synergy
Jeskai Banner
13% of 45 decks +12% synergy
Sky Diamond
12% of 80 decks +8% synergy
Golgari Signet
12% of 107 decks -0% synergy
Talisman of Resilience
11% of 107 decks -1% synergy
Marble Diamond
11% of 143 decks +7% synergy
Liquimetal Torque
10% of 1917 decks +6% synergy
Skyclave Relic
10% of 1935 decks +9% synergy
Selesnya Signet
10% of 62 decks +1% synergy
Replicating Ring
8% of 1920 decks +7% synergy
Extraplanar Lens
8% of 2000 decks +7% synergy
Jeweled Lotus
8% of 1925 decks +3% synergy
Patchwork Banner
8% of 250 decks -2% synergy
Talisman of Unity
8% of 63 decks +1% synergy
Thought Vessel
8% of 1995 decks -9% synergy
Mana Crypt
7% of 2000 decks -0% synergy
Cursed Mirror
7% of 1918 decks +2% synergy
Worn Powerstone
7% of 2000 decks +4% synergy
Charcoal Diamond
6% of 249 decks +1% synergy
Chrome Mox
6% of 2000 decks -0% synergy
Lotus Petal
6% of 2000 decks -1% synergy
Dreamstone Hedron
6% of 1996 decks +4% synergy
Pristine Talisman
5% of 1996 decks +4% synergy
Everflowing Chalice
5% of 1996 decks +0% synergy
Sceptre of Eternal Glory
5% of 1707 decks +4% synergy
Lands
Creosote Heath
68% of 28 decks +64% synergy
Slagwoods Bridge
54% of 558 decks +51% synergy
Twisted Landscape
48% of 25 decks +29% synergy
Gnottvold Slumbermound
38% of 558 decks +37% synergy
Breeding Pool
32% of 28 decks -9% synergy
Godless Shrine
30% of 46 decks -10% synergy
Raugrin Triome
30% of 43 decks +4% synergy
Savage Lands
30% of 107 decks +7% synergy
Abraded Bluffs
30% of 64 decks +25% synergy
Cinder Glade
29% of 561 decks -9% synergy
Blood Crypt
29% of 248 decks -10% synergy
Ziatora's Proving Ground
28% of 100 decks -4% synergy
Razortide Bridge
28% of 43 decks +21% synergy
Smoldering Marsh
28% of 248 decks -5% synergy
Dragonskull Summit
27% of 248 decks -4% synergy
Rustvale Bridge
27% of 137 decks +22% synergy
Mystic Monastery
27% of 45 decks +0% synergy
Overgrown Tomb
26% of 107 decks -16% synergy
Ketria Triome
25% of 28 decks -7% synergy
Command Tower
25% of 1996 decks -49% synergy
Hallowed Fountain
24% of 45 decks -16% synergy
Blazemire Verge
24% of 37 decks +4% synergy
Jungle Shrine
24% of 62 decks -8% synergy
Crumbling Necropolis
24% of 29 decks -7% synergy
Jetmir's Garden
24% of 58 decks -9% synergy
Savai Triome
24% of 46 decks -3% synergy
Silverbluff Bridge
24% of 76 decks +18% synergy
Thornglint Bridge
23% of 61 decks +21% synergy
Shattered Landscape
22% of 18 decks +10% synergy
Steam Vents
22% of 79 decks -17% synergy
Sacred Foundry
21% of 142 decks -15% synergy
Spara's Headquarters
21% of 19 decks -11% synergy
Stomping Ground
20% of 561 decks -21% synergy
Goldmire Bridge
20% of 46 decks +15% synergy
Darkmoss Bridge
19% of 106 decks +15% synergy
Rakdos Carnarium
19% of 248 decks +4% synergy
Sulfurous Springs
18% of 249 decks -2% synergy
Gruul Turf
18% of 561 decks +2% synergy
Tanglepool Bridge
18% of 28 decks +15% synergy
Temple of Enlightenment
18% of 45 decks +1% synergy
Demolition Field
18% of 1692 decks +14% synergy
Wooded Ridgeline
17% of 472 decks +12% synergy
Clifftop Retreat
17% of 141 decks -12% synergy
Ferrous Lake
17% of 24 decks +7% synergy
Foreboding Ruins
17% of 248 decks +1% synergy
Sulfur Falls
16% of 79 decks -14% synergy
Elegant Parlor
16% of 68 decks +7% synergy
Rockfall Vale
16% of 543 decks -6% synergy
Battlefield Forge
15% of 143 decks -10% synergy
Nomad Outpost
15% of 46 decks -13% synergy