Blessing of Leeches (Card)

Blessing of Leeches
In 9528 decks 0% of 2695414 decks
Cardsphere
Archidekt
Commander Spellbook
Moxfield
Scryfall
MTGStocks
Eriette of the Charmed Apple
7.80% of 15075 decks 1176 decks
Killian, Ink Duelist
40.32% of 2773 decks 1118 decks
Shirei, Shizo's Caretaker
15.63% of 5603 decks 876 decks
Sheoldred, the Apocalypse
4.03% of 9564 decks 385 decks
Toxrill, the Corrosive
5.71% of 5656 decks 323 decks
Xantcha, Sleeper Agent
9.08% of 3337 decks 303 decks
Judith, Carnage Connoisseur
3.51% of 8409 decks 295 decks
Zur the Enchanter
1.76% of 11522 decks 203 decks
Ob Nixilis, Captive Kingpin
2.24% of 9004 decks 202 decks
Yargle and Multani
2.11% of 6206 decks 131 decks
Yargle, Glutton of Urborg
34.58% of 373 decks 129 decks
The Beamtown Bullies
2.48% of 5115 decks 127 decks
Rowan, Scion of War
1.38% of 9112 decks 126 decks
Mortarion, Daemon Primarch
10.77% of 1161 decks 125 decks
Tatsunari, Toad Rider
2.04% of 5889 decks 120 decks
Eriette, the Beguiler
3.15% of 2988 decks 94 decks
Abaddon the Despoiler
1.76% of 5114 decks 90 decks
Marvo, Deep Operative
2.46% of 3454 decks 85 decks
New Cards
Bleachbone Verge
7% of 288 decks +3% synergy
Wastewood Verge
4% of 113 decks +2% synergy
The Speed Demon
1% of 858 decks +0% synergy
Maximum Overdrive
0% of 815 decks +0% synergy
Momentum Breaker
0% of 916 decks +0% synergy
High Synergy Cards
Mesa Enchantress
70% of 3224 decks +65% synergy
Sram, Senior Edificer
68% of 3224 decks +63% synergy
All That Glitters
67% of 3224 decks +62% synergy
Ethereal Armor
65% of 3224 decks +62% synergy
Sage's Reverie
63% of 3224 decks +61% synergy
Kor Spiritdancer
61% of 3224 decks +59% synergy
Timely Ward
55% of 3224 decks +52% synergy
Darksteel Mutation
52% of 3224 decks +46% synergy
Winds of Rath
49% of 3224 decks +46% synergy
Unquestioned Authority
48% of 3224 decks +46% synergy
Top Cards
Swiftfoot Boots
47% of 9471 decks +20% synergy
Rampant Growth
47% of 1249 decks +12% synergy
Swords to Plowshares
47% of 3224 decks -16% synergy
Cultivate
46% of 1249 decks +0% synergy
Chaos Warp
44% of 2090 decks +13% synergy
Retether
43% of 3224 decks +41% synergy
Blasphemous Act
43% of 2090 decks +9% synergy
Counterspell
41% of 1834 decks -1% synergy
Angelic Gift
41% of 3224 decks +40% synergy
Angelic Destiny
41% of 3224 decks +40% synergy
Game Changers
Smothering Tithe
19% of 3224 decks -5% synergy
Enlightened Tutor
15% of 3224 decks -2% synergy
Bolas's Citadel
14% of 9471 decks +5% synergy
Jeska's Will
11% of 2090 decks -6% synergy
Demonic Tutor
11% of 9471 decks -11% synergy
Fierce Guardianship
9% of 1834 decks -10% synergy
Vampiric Tutor
8% of 9471 decks -10% synergy
Serra's Sanctum
6% of 3224 decks +5% synergy
Grand Arbiter Augustin IV
5% of 530 decks +2% synergy
Trouble in Pairs
5% of 1788 decks +0% synergy
Creatures
Archon of Sun's Grace
39% of 3224 decks +35% synergy
Pearl-Ear, Imperial Advisor
38% of 1337 decks +36% synergy
Sakura-Tribe Elder
36% of 1249 decks +18% synergy
Light-Paws, Emperor's Voice
35% of 3224 decks +34% synergy
Heliod's Pilgrim
33% of 3224 decks +32% synergy
Danitha Capashen, Paragon
32% of 3224 decks +28% synergy
Killian, Ink Duelist
32% of 3224 decks +30% synergy
Eidolon of Countless Battles
31% of 3224 decks +30% synergy
Sythis, Harvest's Hand
29% of 119 decks +21% synergy
Sun Titan
27% of 3224 decks +17% synergy
Transcendent Envoy
26% of 3224 decks +25% synergy
Starfield Mystic
26% of 3224 decks +23% synergy
Ignoble Hierarch
26% of 314 decks +1% synergy
Inquisitive Glimmer
25% of 179 decks +21% synergy
Umbra Mystic
25% of 3224 decks +24% synergy
Ondu Spiritdancer
24% of 2819 decks +21% synergy
Tatyova, Benthic Druid
22% of 357 decks +10% synergy
Jukai Naturalist
22% of 119 decks +15% synergy
Llanowar Elves
22% of 1249 decks +1% synergy
Lurrus of the Dream-Den
20% of 3224 decks +17% synergy
Mutalith Vortex Beast
20% of 286 decks +19% synergy
Zur the Enchanter
19% of 530 decks +16% synergy
Lavinia, Azorius Renegade
18% of 530 decks +15% synergy
Gray Merchant of Asphodel
18% of 9471 decks +9% synergy
Satyr Enchanter
18% of 119 decks +13% synergy
Hateful Eidolon
18% of 9471 decks +17% synergy
Kardur, Doomscourge
17% of 2090 decks +11% synergy
Stormfist Crusader
17% of 2090 decks +14% synergy
Sludge Monster
17% of 1834 decks +16% synergy
Be'lakor, the Dark Master
17% of 286 decks +16% synergy
Elvish Mystic
17% of 1249 decks -1% synergy
Hero of Iroas
17% of 3224 decks +16% synergy
Esper Sentinel
16% of 3224 decks -4% synergy
General's Enforcer
16% of 3224 decks +14% synergy
Blood Artist
15% of 9471 decks +4% synergy
Brash Taunter
15% of 2090 decks +11% synergy
Eternal Witness
15% of 1249 decks -5% synergy
The Master of Keys
14% of 174 decks +11% synergy
Sanctum Weaver
14% of 1249 decks +9% synergy
Codsworth, Handy Helper
14% of 1690 decks +12% synergy
Mahadi, Emporium Master
14% of 2090 decks +8% synergy
Eidolon of Blossoms
14% of 1249 decks +9% synergy
Auramancer
14% of 3224 decks +12% synergy
Eriette of the Charmed Apple
14% of 2759 decks +13% synergy
Faeburrow Elder
13% of 119 decks +2% synergy
Thrummingbird
13% of 1834 decks +10% synergy
Kessig Flamebreather
13% of 2090 decks +10% synergy
Spellbook Vendor
13% of 2759 decks +13% synergy
Eutropia the Twice-Favored
13% of 357 decks +12% synergy
Zulaport Cutthroat
13% of 9471 decks +3% synergy
Instants
Generous Gift
40% of 3224 decks +15% synergy
Beast Within
37% of 1249 decks -0% synergy
Negate
36% of 1834 decks +14% synergy
Rakdos Charm
36% of 2090 decks +21% synergy
Terminate
33% of 2090 decks +13% synergy
Bedevil
32% of 2090 decks +18% synergy
Dark Ritual
30% of 9471 decks +8% synergy
Path to Exile
27% of 3224 decks -19% synergy
Utter End
27% of 3224 decks +20% synergy
Putrefy
27% of 1249 decks +11% synergy
Stroke of Midnight
27% of 2759 decks +16% synergy
Anguished Unmaking
25% of 3224 decks +1% synergy
Growth Spiral
22% of 357 decks +0% synergy
Brainstorm
21% of 1834 decks +1% synergy
Assassin's Trophy
21% of 1249 decks -9% synergy
Return of the Wildspeaker
20% of 1249 decks +7% synergy
Boros Charm
19% of 172 decks -6% synergy
Void Rend
18% of 530 decks +4% synergy
Tamiyo's Safekeeping
18% of 1249 decks +12% synergy
Hindering Light
18% of 530 decks +17% synergy
Golgari Charm
17% of 1249 decks +12% synergy
Arcane Denial
17% of 1834 decks -3% synergy
Crib Swap
17% of 3224 decks +16% synergy
Heroic Intervention
17% of 1249 decks -13% synergy
Malakir Rebirth
16% of 9471 decks +8% synergy
Chaos Mutation
15% of 286 decks +14% synergy
Thrill of Possibility
15% of 2090 decks +5% synergy
Shelter
15% of 3224 decks +14% synergy
Fracture
15% of 3224 decks +9% synergy
Revitalizing Repast
15% of 532 decks +6% synergy
Teferi's Protection
14% of 3224 decks -5% synergy
An Offer You Can't Refuse
14% of 1834 decks -7% synergy
Electrickery
14% of 2090 decks +13% synergy
Bolt Bend
14% of 2090 decks +10% synergy
Withering Torment
13% of 2834 decks +5% synergy
Tyvar's Stand
13% of 1249 decks +9% synergy
Harrow
13% of 1249 decks +4% synergy
Dovin's Veto
13% of 530 decks -5% synergy
Village Rites
13% of 9471 decks +3% synergy
Not Dead After All
13% of 7589 decks +10% synergy
Big Score
13% of 2090 decks +4% synergy
Mortify
13% of 3224 decks +1% synergy
Infernal Grasp
13% of 9471 decks +6% synergy
Abstruse Appropriation
13% of 1326 decks +11% synergy
Gaea's Gift
13% of 1249 decks +9% synergy
Despark
13% of 3224 decks -3% synergy
Fell the Profane
13% of 4184 decks +4% synergy
Blood for the Blood God!
12% of 2090 decks +9% synergy
Sejiri Shelter
12% of 3224 decks +9% synergy
Polymorphist's Jest
12% of 1834 decks +11% synergy
Sorceries
Open the Armory
36% of 3224 decks +32% synergy
Kodama's Reach
36% of 1249 decks +5% synergy
Feed the Swarm
32% of 9471 decks +14% synergy
Farseek
32% of 1249 decks -3% synergy
Sign in Blood
29% of 9471 decks +19% synergy
Faithless Looting
24% of 2090 decks +8% synergy
Read the Bones
23% of 9471 decks +15% synergy
Villainous Wealth
22% of 357 decks +14% synergy
Nature's Lore
22% of 1249 decks -10% synergy
Ruinous Ultimatum
22% of 172 decks +3% synergy
Chain Reaction
21% of 2090 decks +17% synergy
Mana Geyser
21% of 2090 decks +14% synergy
Tectonic Hazard
19% of 1544 decks +17% synergy
Vandalblast
18% of 2090 decks +2% synergy
Night's Whisper
17% of 9471 decks +8% synergy
Mass Diminish
15% of 1834 decks +15% synergy
Silverquill Command
15% of 3224 decks +15% synergy
Three Visits
14% of 1249 decks -10% synergy
Rishkar's Expertise
13% of 1249 decks +3% synergy
Toxic Deluge
13% of 9471 decks -4% synergy
Blazing Volley
13% of 2090 decks +12% synergy
Resurgent Belief
13% of 3224 decks +11% synergy
Curse of the Swine
13% of 1834 decks +9% synergy
Damn
13% of 3224 decks -4% synergy
Eerie Ultimatum
13% of 119 decks +1% synergy
Tezzeret's Gambit
12% of 1834 decks +9% synergy
Culling Ritual
12% of 1249 decks +1% synergy
Single Combat
12% of 3224 decks +10% synergy
Smash to Dust
12% of 2090 decks +11% synergy
Disrupt Decorum
12% of 2090 decks +9% synergy
End the Festivities
12% of 2090 decks +10% synergy
Mizzium Mortars
11% of 2090 decks +10% synergy
Idyllic Tutor
11% of 3224 decks +7% synergy
Ravenform
11% of 1834 decks +8% synergy
Earthquake
11% of 2090 decks +9% synergy
Brilliant Restoration
11% of 3224 decks +9% synergy
Vindicate
11% of 3224 decks +4% synergy
Contentious Plan
10% of 1834 decks +9% synergy
Fiery Confluence
10% of 2090 decks +8% synergy
Austere Command
10% of 3224 decks -2% synergy
Bala Ged Recovery
10% of 1249 decks +2% synergy
Scouring Sands
10% of 2090 decks +9% synergy
Grapeshot
10% of 2090 decks +6% synergy
Explore
10% of 1249 decks +0% synergy
Ponder
9% of 1834 decks -3% synergy
Traverse the Outlands
9% of 1249 decks +7% synergy
Jarad's Orders
9% of 1249 decks +7% synergy
Supreme Verdict
9% of 530 decks -5% synergy
Victimize
9% of 9471 decks -3% synergy
Exsanguinate
9% of 9471 decks +3% synergy
Utility Artifacts
Mind Stone
30% of 9471 decks +13% synergy
Lightning Greaves
24% of 9471 decks -2% synergy
Wayfarer's Bauble
22% of 9471 decks +12% synergy
Commander's Sphere
15% of 9471 decks +0% synergy
Neurok Stealthsuit
14% of 1834 decks +13% synergy
Jet Medallion
11% of 9471 decks +8% synergy
Azorius Locket
10% of 530 decks +9% synergy
Ashnod's Altar
10% of 9471 decks +2% synergy
Robe of Stars
9% of 3224 decks +7% synergy
Mithril Coat
9% of 8336 decks +4% synergy
Skullclamp
8% of 9471 decks -4% synergy
Well of Lost Dreams
8% of 9471 decks +6% synergy
Whispersilk Cloak
7% of 9471 decks +3% synergy
Blackblade Reforged
6% of 9471 decks +2% synergy
Thran Power Suit
6% of 9471 decks +5% synergy
Hedron Archive
6% of 9471 decks +3% synergy
Bident of Thassa
6% of 1834 decks -1% synergy
Mask of Griselbrand
5% of 9471 decks +4% synergy
Loxodon Warhammer
5% of 9471 decks +3% synergy
Fist of Suns
5% of 57 decks -2% synergy
Bontu's Monument
5% of 9471 decks +3% synergy
Helm of the Gods
5% of 9471 decks +5% synergy
Mask of Avacyn
5% of 9471 decks +4% synergy
Enchantments
Songbirds' Blessing
39% of 2681 decks +38% synergy
Mantle of the Ancients
38% of 3224 decks +36% synergy
Spirit Mantle
38% of 3224 decks +36% synergy
Light of Promise
36% of 3224 decks +35% synergy
Battle Mastery
36% of 3224 decks +35% synergy
Gift of Immortality
33% of 3224 decks +31% synergy
Hyena Umbra
31% of 3224 decks +29% synergy
Kaya's Ghostform
30% of 9471 decks +26% synergy
Glasswing Grace
29% of 1335 decks +27% synergy
Feather of Flight
28% of 1116 decks +28% synergy
Chains of Custody
28% of 3224 decks +28% synergy
Benevolent Blessing
27% of 3224 decks +26% synergy
Sheltered by Ghosts
26% of 881 decks +24% synergy
Phyrexian Arena
25% of 9471 decks +10% synergy
Edge of the Divinity
25% of 3224 decks +25% synergy
Sphere of Safety
25% of 3224 decks +20% synergy
The Lost and the Damned
24% of 286 decks +22% synergy
Sigil of the Empty Throne
24% of 3224 decks +21% synergy
Ghostly Prison
24% of 3224 decks +12% synergy
Pentarch Ward
23% of 3224 decks +23% synergy
Spirit Link
23% of 3224 decks +22% synergy
Rancor
23% of 1249 decks +18% synergy
Spectra Ward
22% of 3224 decks +22% synergy
Redemption Arc
22% of 1788 decks +21% synergy
Sunbond
22% of 3224 decks +21% synergy
Sterling Grove
21% of 119 decks +13% synergy
Wild Growth
21% of 1249 decks +10% synergy
Shielding Plax
20% of 357 decks +19% synergy
Martial Impetus
20% of 3224 decks +20% synergy
Sigarda's Aid
19% of 3224 decks +16% synergy
Reprobation
19% of 3224 decks +18% synergy
Shielded by Faith
18% of 3224 decks +17% synergy
Steel of the Godhead
17% of 530 decks +15% synergy
Propaganda
17% of 1834 decks +5% synergy
Snake Umbra
17% of 1249 decks +14% synergy
Aqueous Form
16% of 1834 decks +12% synergy
Holy Mantle
16% of 3224 decks +15% synergy
Greater Auramancy
16% of 3224 decks +14% synergy
Lawmage's Binding
16% of 530 decks +15% synergy
Enchantress's Presence
16% of 1249 decks +11% synergy
Lord Skitter's Blessing
15% of 7671 decks +15% synergy
Font of Fertility
15% of 1249 decks +14% synergy
Rhystic Study
15% of 1834 decks -12% synergy
Phyresis
15% of 9471 decks +13% synergy
Ghoulish Impetus
15% of 7944 decks +13% synergy
Minion's Return
15% of 9471 decks +14% synergy
Vow of Duty
15% of 3224 decks +14% synergy
Curator's Ward
14% of 1834 decks +14% synergy
Armadillo Cloak
14% of 119 decks +12% synergy
Strength of the Harvest
14% of 64 decks +9% synergy
Battles
Invasion of Theros
13% of 505 decks +12% synergy
Planeswalkers
Geyadrone Dihada
26% of 286 decks +24% synergy
Dovin, Hand of Control
11% of 530 decks +10% synergy
Ob Nixilis, the Hate-Twisted
5% of 9471 decks +4% synergy
Utility Lands
Hall of Heliod's Generosity
43% of 3224 decks +36% synergy
Bojuka Bog
39% of 9471 decks +9% synergy
Kessig Wolf Run
34% of 314 decks +19% synergy
Skarrg, the Rage Pits
28% of 314 decks +25% synergy
Reliquary Tower
26% of 9471 decks -4% synergy
Rogue's Passage
26% of 9471 decks +6% synergy
Urborg, Tomb of Yawgmoth
16% of 9471 decks +7% synergy
Cabal Coffers
16% of 9471 decks +5% synergy
Witch's Cottage
11% of 9471 decks +7% synergy
Castle Locthwain
11% of 9471 decks +6% synergy
Cabal Stronghold
10% of 9471 decks +6% synergy
Mosswort Bridge
9% of 1249 decks -2% synergy
Boseiju, Who Endures
8% of 1249 decks -10% synergy
War Room
8% of 9471 decks +2% synergy
Barren Moor
8% of 9471 decks +5% synergy
Otawara, Soaring City
8% of 1834 decks -8% synergy
Mystic Sanctuary
8% of 1834 decks -4% synergy
Eiganjo, Seat of the Empire
8% of 3224 decks -0% synergy
Mortuary Mire
8% of 9471 decks +3% synergy
Restless Fortress
8% of 2777 decks +5% synergy
Vault of the Archangel
8% of 3224 decks -3% synergy
Shizo, Death's Storehouse
8% of 9471 decks +3% synergy
Alchemist's Refuge
8% of 357 decks +1% synergy
Temple of the False God
8% of 9471 decks -2% synergy
Rivendell
7% of 1592 decks +3% synergy
Sunhome, Fortress of the Legion
7% of 172 decks +2% synergy
Axgard Armory
6% of 172 decks +4% synergy
Secluded Steppe
6% of 3224 decks +3% synergy
Nykthos, Shrine to Nyx
6% of 9471 decks +1% synergy
Castle Vantress
6% of 1834 decks +2% synergy
Takenuma, Abandoned Mire
6% of 9471 decks -4% synergy
Tranquil Thicket
6% of 1249 decks +2% synergy
Geier Reach Sanitarium
6% of 9471 decks +2% synergy
Command Beacon
5% of 9471 decks +1% synergy
Shinka, the Bloodsoaked Keep
5% of 2090 decks +4% synergy
Khalni Garden
5% of 1249 decks +4% synergy
Mana Artifacts
Sol Ring
77% of 9471 decks -7% synergy
Arcane Signet
71% of 9471 decks -2% synergy
Rakdos Signet
60% of 2090 decks +31% synergy
Orzhov Signet
58% of 3224 decks +31% synergy
Talisman of Hierarchy
51% of 3224 decks +26% synergy
Dimir Signet
48% of 1834 decks +19% synergy
Azorius Signet
48% of 530 decks +22% synergy
Talisman of Creativity
45% of 286 decks +16% synergy
Talisman of Indulgence
43% of 2090 decks +16% synergy
Izzet Signet
42% of 286 decks +14% synergy
Talisman of Dominance
39% of 1834 decks +7% synergy
Talisman of Progress
30% of 530 decks +6% synergy
Boros Signet
28% of 172 decks +6% synergy
Talisman of Conviction
23% of 172 decks -1% synergy
Fellwar Stone
21% of 9471 decks +0% synergy
Fire Diamond
21% of 2090 decks +16% synergy
Charcoal Diamond
20% of 9471 decks +15% synergy
Thought Vessel
19% of 9471 decks +2% synergy
Golgari Signet
17% of 1249 decks +4% synergy
Talisman of Resilience
13% of 1249 decks +1% synergy
Timeless Lotus
12% of 57 decks -0% synergy
Midnight Clock
12% of 1834 decks +7% synergy
Sky Diamond
11% of 1834 decks +7% synergy
Marble Diamond
10% of 3224 decks +6% synergy
Gruul Signet
10% of 314 decks -2% synergy
Relic of Sauron
7% of 254 decks -1% synergy
Everflowing Chalice
7% of 9471 decks +3% synergy
Simic Signet
7% of 357 decks -7% synergy
Prismatic Lens
6% of 9471 decks +5% synergy
Talisman of Impulse
6% of 314 decks -3% synergy
Worn Powerstone
6% of 9471 decks +3% synergy
Talisman of Unity
6% of 119 decks -2% synergy
Selesnya Signet
6% of 119 decks -3% synergy
Lands
Command Tower
64% of 9471 decks -11% synergy
Smoldering Marsh
63% of 2090 decks +30% synergy
Caves of Koilos
60% of 3224 decks +32% synergy
Savage Lands
59% of 314 decks +35% synergy
Crumbling Necropolis
56% of 286 decks +24% synergy
Isolated Chapel
55% of 3224 decks +26% synergy
Sunken Hollow
51% of 1834 decks +17% synergy
Nomad Outpost
48% of 172 decks +20% synergy
Arcane Sanctum
48% of 530 decks +20% synergy
Cinder Glade
48% of 314 decks +9% synergy
Foreboding Ruins
47% of 2090 decks +31% synergy
Opulent Palace
47% of 357 decks +21% synergy
Tainted Field
46% of 3224 decks +33% synergy
Llanowar Wastes
42% of 1249 decks +16% synergy
Shineshadow Snarl
41% of 3224 decks +28% synergy
Dragonskull Summit
41% of 2090 decks +9% synergy
Godless Shrine
39% of 3224 decks -1% synergy
Shivan Reef
39% of 286 decks +12% synergy
Temple of Silence
39% of 3224 decks +20% synergy
Vault of Champions
38% of 3224 decks +13% synergy
Rakdos Carnarium
38% of 2090 decks +24% synergy
Orzhov Basilica
38% of 3224 decks +21% synergy
Shadowblood Ridge
35% of 2090 decks +23% synergy
Yavimaya Coast
34% of 357 decks +7% synergy
Temple of Abandon
33% of 314 decks +19% synergy
Sandsteppe Citadel
33% of 119 decks +7% synergy
Temple of Malady
33% of 1249 decks +16% synergy
Mossfire Valley
32% of 314 decks +21% synergy
Temple of Malice
31% of 2090 decks +17% synergy
Game Trail
31% of 314 decks +15% synergy
Sulfurous Springs
31% of 2090 decks +10% synergy
Prairie Stream
30% of 530 decks -3% synergy
Golgari Rot Farm
30% of 1249 decks +12% synergy
Drowned Catacomb
30% of 1834 decks +4% synergy
Simic Growth Chamber
30% of 357 decks +10% synergy
Temple of Deceit
29% of 1834 decks +13% synergy
Temple Garden
29% of 119 decks -10% synergy
Dimir Aqueduct
29% of 1834 decks +13% synergy
Fetid Heath
29% of 3224 decks +18% synergy
Woodland Cemetery
28% of 1249 decks -0% synergy
The World Tree
28% of 57 decks -4% synergy
Myriad Landscape
28% of 9471 decks +9% synergy
Tainted Peak
28% of 2090 decks +17% synergy
Glacial Fortress
27% of 530 decks +1% synergy
Battlefield Forge
27% of 172 decks +1% synergy
Blood Crypt
27% of 2090 decks -12% synergy
Brightclimb Pathway
26% of 3224 decks +16% synergy
Choked Estuary
26% of 1834 decks +9% synergy
Indatha Triome
26% of 119 decks -4% synergy
Hallowed Fountain
26% of 530 decks -15% synergy