Roiling Terrain (Card)
Roiling Terrain
In 1931 decks
0% of 2480648 decks
Zo-Zu the Punisher
28.07% of 2091 decks
587 decks
Numot, the Devastator
40.29% of 891 decks
359 decks
Svella, Ice Shaper
10.81% of 2628 decks
284 decks
Klothys, God of Destiny
3.38% of 1865 decks
63 decks
Kibo, Uktabi Prince
0.52% of 9497 decks
49 decks
Soul of Windgrace
1.09% of 2936 decks
32 decks
Hazezon, Shaper of Sand
0.36% of 7844 decks
28 decks
Wort, the Raidmother
0.91% of 2857 decks
26 decks
Melek, Izzet Paragon
1.70% of 1525 decks
26 decks
Shattergang Brothers
1.44% of 1665 decks
24 decks
Lord Windgrace
0.21% of 9211 decks
19 decks
Zevlor, Elturel Exile
0.49% of 3917 decks
19 decks
Storm, Force of Nature
0.18% of 6617 decks
12 decks
Torbran, Thane of Red Fell
0.28% of 3922 decks
11 decks
Yurlok of Scorch Thrash
0.17% of 6457 decks
11 decks
The Motherlode, Excavator
8.57% of 105 decks
9 decks
Saskia the Unyielding
0.16% of 5621 decks
9 decks
Ramos, Dragon Engine
0.10% of 8733 decks
9 decks
New Cards
Walk-In Closet // Forgotten Cellar
67% of 21 decks
+55% synergy
Razorkin Needlehead
33% of 108 decks
+25% synergy
Thornspire Verge
29% of 34 decks
+12% synergy
Enter the Enigma
27% of 15 decks
+19% synergy
Unable to Scream
24% of 21 decks
+21% synergy
High Synergy Cards
Armageddon
81% of 507 decks
+80% synergy
Pillage
71% of 1931 decks
+70% synergy
Conduit of Worlds
71% of 439 decks
+64% synergy
Molten Rain
64% of 1931 decks
+64% synergy
Impending Disaster
64% of 1931 decks
+64% synergy
Catastrophe
64% of 507 decks
+64% synergy
Wildfire
60% of 1931 decks
+60% synergy
Dingus Egg
59% of 1931 decks
+59% synergy
Stone Rain
56% of 1931 decks
+56% synergy
Sinkhole
54% of 239 decks
+54% synergy
Top Cards
Acidic Slime
58% of 717 decks
+54% synergy
Lavinia, Azorius Renegade
57% of 408 decks
+53% synergy
Dawn's Truce
55% of 60 decks
+40% synergy
Ramunap Excavator
55% of 705 decks
+48% synergy
Seismic Spike
54% of 1931 decks
+54% synergy
Rain of Tears
54% of 239 decks
+54% synergy
Waking the Trolls
53% of 692 decks
+53% synergy
Counterspell
52% of 523 decks
+10% synergy
Price of Glory
52% of 1931 decks
+52% synergy
Propaganda
51% of 523 decks
+40% synergy
Creatures
Tomik, Distinguished Advokist
50% of 495 decks
+50% synergy
Archmage of Runes
50% of 6 decks
+41% synergy
Sun Titan
45% of 507 decks
+35% synergy
Goblin Anarchomancer
44% of 687 decks
+30% synergy
Gold Myr
43% of 507 decks
+41% synergy
Serra Paragon
43% of 441 decks
+42% synergy
Dwarven Miner
42% of 1931 decks
+42% synergy
Stoneshaker Shaman
42% of 1931 decks
+41% synergy
Orcish Settlers
42% of 1931 decks
+41% synergy
Akki Blizzard-Herder
41% of 1931 decks
+41% synergy
Sunspine Lynx
41% of 230 decks
+38% synergy
Grand Arbiter Augustin IV
41% of 416 decks
+37% synergy
Titania, Protector of Argoth
38% of 717 decks
+35% synergy
Avacyn, Angel of Hope
38% of 507 decks
+34% synergy
Silver Myr
37% of 523 decks
+34% synergy
Army Ants
37% of 239 decks
+37% synergy
Llanowar Elves
37% of 717 decks
+16% synergy
Dwarven Blastminer
37% of 1931 decks
+37% synergy
Iron Myr
37% of 1931 decks
+34% synergy
Krenko's Buzzcrusher
36% of 651 decks
+36% synergy
Detritivore
36% of 1931 decks
+36% synergy
Pollywog Prodigy
35% of 40 decks
+25% synergy
Keldon Firebombers
35% of 1931 decks
+35% synergy
Twinflame Tyrant
35% of 26 decks
+23% synergy
Roxanne, Starfall Savant
35% of 197 decks
+31% synergy
Rime Tender
34% of 699 decks
+34% synergy
Terastodon
34% of 717 decks
+31% synergy
Invader Parasite
34% of 1931 decks
+34% synergy
Helldozer
32% of 239 decks
+32% synergy
Elvish Mystic
30% of 717 decks
+13% synergy
Bloodroot Apothecary
30% of 53 decks
+27% synergy
Wort, the Raidmother
29% of 717 decks
+29% synergy
Dwarven Driller
29% of 1931 decks
+28% synergy
Harsh Mentor
27% of 1914 decks
+25% synergy
The Gitrog Monster
26% of 155 decks
+21% synergy
Birds of Paradise
26% of 717 decks
-1% synergy
Archaeomancer
25% of 523 decks
+22% synergy
Solphim, Mayhem Dominus
25% of 1290 decks
+21% synergy
Mine Layer
25% of 1931 decks
+25% synergy
Timeless Witness
24% of 687 decks
+22% synergy
Torbran, Thane of Red Fell
24% of 1864 decks
+21% synergy
Thalia and The Gitrog Monster
24% of 33 decks
+20% synergy
Yuma, Proud Protector
24% of 29 decks
+23% synergy
Ignoble Hierarch
24% of 141 decks
-2% synergy
Fulminator Mage
24% of 239 decks
+24% synergy
Iridescent Vinelasher
24% of 21 decks
+21% synergy
Deus of Calamity
24% of 717 decks
+24% synergy
Zurgo and Ojutai
23% of 252 decks
+21% synergy
Orcish Lumberjack
23% of 717 decks
+21% synergy
Azusa, Lost but Seeking
23% of 717 decks
+15% synergy
Instants
Boros Charm
47% of 507 decks
+22% synergy
Swords to Plowshares
47% of 507 decks
-16% synergy
Faith's Reward
44% of 507 decks
+43% synergy
Wrecking Ball
43% of 239 decks
+43% synergy
Negate
40% of 523 decks
+17% synergy
Beast Within
39% of 717 decks
+1% synergy
Path to Exile
36% of 507 decks
-10% synergy
Dovin's Veto
34% of 407 decks
+15% synergy
Teferi's Protection
33% of 503 decks
+13% synergy
Chaos Warp
31% of 1931 decks
-1% synergy
Thrill of Possibility
29% of 1864 decks
+19% synergy
Brainstorm
27% of 523 decks
+6% synergy
Cyclonic Rift
25% of 523 decks
-3% synergy
Price of Progress
25% of 1931 decks
+24% synergy
Growth Spiral
25% of 73 decks
+3% synergy
Generous Gift
24% of 495 decks
-1% synergy
Heroic Intervention
23% of 705 decks
-7% synergy
Once and Future
22% of 699 decks
+22% synergy
Assassin's Trophy
22% of 151 decks
-8% synergy
Volcanic Offering
21% of 1929 decks
+21% synergy
Smashing Success
20% of 1839 decks
+20% synergy
Harrow
20% of 717 decks
+10% synergy
Sunder
19% of 523 decks
+19% synergy
Boil
19% of 1931 decks
+19% synergy
Demand Answers
18% of 703 decks
+11% synergy
Reverberate
18% of 1931 decks
+15% synergy
Untimely Malfunction
17% of 84 decks
+1% synergy
Mana Leak
16% of 523 decks
+14% synergy
Render Silent
14% of 416 decks
+12% synergy
Calamity's Wake
14% of 401 decks
+14% synergy
Seething Song
14% of 1931 decks
+8% synergy
Disenchant
14% of 507 decks
+10% synergy
Big Score
13% of 1686 decks
+4% synergy
Planar Genesis
13% of 23 decks
+5% synergy
Mana Drain
13% of 523 decks
-2% synergy
Mystical Tutor
12% of 523 decks
-3% synergy
Terminate
12% of 239 decks
-9% synergy
Abrade
11% of 1910 decks
+0% synergy
Dark Ritual
11% of 239 decks
-11% synergy
Enlightened Tutor
11% of 507 decks
-7% synergy
Crop Rotation
11% of 717 decks
+1% synergy
Red Elemental Blast
10% of 1931 decks
+4% synergy
Perch Protection
10% of 30 decks
+7% synergy
Cosmic Intervention
10% of 491 decks
+9% synergy
Lightning Bolt
10% of 1931 decks
-1% synergy
Wild Magic Surge
9% of 1663 decks
+6% synergy
Volcanic Upheaval
9% of 1919 decks
+9% synergy
Entish Restoration
9% of 347 decks
+1% synergy
Seismic Strike
9% of 1931 decks
+8% synergy
Bedevil
9% of 223 decks
-6% synergy
Sorceries
Boltwave
50% of 10 decks
+32% synergy
Ruination
50% of 1931 decks
+49% synergy
Winter's Grasp
49% of 717 decks
+49% synergy
Tremble
48% of 1931 decks
+48% synergy
Boom // Bust
47% of 1931 decks
+46% synergy
Rancid Earth
44% of 239 decks
+43% synergy
Creeping Mold
43% of 717 decks
+43% synergy
Harmonize
43% of 717 decks
+34% synergy
Decimate
42% of 717 decks
+33% synergy
Vandalblast
40% of 1931 decks
+24% synergy
Splendid Reclamation
40% of 705 decks
+36% synergy
Choking Sands
39% of 239 decks
+39% synergy
Cleansing Wildfire
36% of 1853 decks
+36% synergy
Reclaiming Vines
35% of 707 decks
+35% synergy
Wake of Destruction
35% of 1931 decks
+35% synergy
Epicenter
34% of 1931 decks
+34% synergy
Mwonvuli Acid-Moss
31% of 717 decks
+31% synergy
Icequake
31% of 239 decks
+31% synergy
Cultivate
31% of 717 decks
-15% synergy
Thoughts of Ruin
30% of 1931 decks
+30% synergy
Sundering Eruption
30% of 358 decks
+25% synergy
Wreak Havoc
29% of 717 decks
+29% synergy
Icefall
29% of 1931 decks
+29% synergy
Blasphemous Act
28% of 1931 decks
-5% synergy
Obliterate
28% of 1931 decks
+28% synergy
Drain the Well
28% of 167 decks
+28% synergy
Regrowth
27% of 717 decks
+24% synergy
Tectonic Break
27% of 1931 decks
+27% synergy
Despoil
27% of 239 decks
+27% synergy
Worldsoul's Rage
25% of 225 decks
+22% synergy
Destructive Force
25% of 1931 decks
+25% synergy
From the Ashes
24% of 1930 decks
+23% synergy
Dryad's Revival
23% of 660 decks
+23% synergy
Ravages of War
23% of 507 decks
+23% synergy
Decree of Annihilation
23% of 1931 decks
+23% synergy
Tsunami
23% of 717 decks
+23% synergy
Befoul
23% of 239 decks
+23% synergy
Rampant Growth
22% of 717 decks
-13% synergy
Casualties of War
21% of 151 decks
+17% synergy
Grab the Prize
21% of 77 decks
+14% synergy
Demolish
20% of 1931 decks
+20% synergy
Frenzied Tilling
20% of 717 decks
+20% synergy
Raze
20% of 1931 decks
+20% synergy
Desecration Plague
19% of 717 decks
+19% synergy
Bend or Break
19% of 1931 decks
+19% synergy
Rubble Reading
18% of 1876 decks
+18% synergy
Farewell
18% of 459 decks
+4% synergy
Wrath of God
17% of 507 decks
+10% synergy
Poison the Well
17% of 239 decks
+17% synergy
Kodama's Reach
17% of 717 decks
-15% synergy
Utility Artifacts
Crucible of Worlds
51% of 1931 decks
+49% synergy
Ankh of Mishra
40% of 1931 decks
+40% synergy
Winter Moon
28% of 413 decks
+27% synergy
Lightning Greaves
25% of 1931 decks
-0% synergy
Ruby Medallion
23% of 1931 decks
+20% synergy
Swiftfoot Boots
18% of 1931 decks
-10% synergy
Hedron Archive
15% of 1919 decks
+12% synergy
Storm Cauldron
14% of 1931 decks
+13% synergy
Winter Orb
13% of 1931 decks
+13% synergy
Bootleggers' Stash
11% of 601 decks
+8% synergy
God-Pharaoh's Statue
10% of 1873 decks
+9% synergy
Norn's Annex
8% of 507 decks
+6% synergy
Mithril Coat
8% of 979 decks
+2% synergy
Vexing Bauble
8% of 328 decks
+6% synergy
Urza's Sylex
8% of 401 decks
+8% synergy
Door to Nothingness
8% of 39 decks
+4% synergy
Mana Web
8% of 1931 decks
+8% synergy
Gerrard's Hourglass Pendant
7% of 1613 decks
+7% synergy
Ghirapur Orrery
7% of 1916 decks
+7% synergy
Crawlspace
7% of 1931 decks
+6% synergy
Mycosynth Lattice
7% of 1931 decks
+6% synergy
Waterlogged Hulk
6% of 215 decks
+5% synergy
Elixir of Immortality
5% of 1931 decks
+4% synergy
Enchantments
Fall of the Thran
51% of 500 decks
+51% synergy
Ghostly Prison
48% of 507 decks
+36% synergy
The Mending of Dominaria
46% of 701 decks
+45% synergy
Manabarbs
39% of 1931 decks
+38% synergy
Destructive Flow
37% of 167 decks
+37% synergy
Smothering Tithe
37% of 496 decks
+12% synergy
Blood Moon
31% of 1931 decks
+28% synergy
Rhystic Study
30% of 523 decks
+3% synergy
War's Toll
30% of 1931 decks
+29% synergy
Sulfuric Vortex
27% of 1931 decks
+26% synergy
Whirlwind of Thought
24% of 406 decks
+14% synergy
Tectonic Instability
24% of 1931 decks
+23% synergy
Burning Earth
23% of 1931 decks
+22% synergy
Confounding Conundrum
22% of 513 decks
+22% synergy
Tainted Aether
18% of 239 decks
+17% synergy
Exploration
17% of 717 decks
+9% synergy
Furnace of Rath
17% of 1931 decks
+16% synergy
Blight
16% of 239 decks
+16% synergy
Mechanized Warfare
16% of 1545 decks
+15% synergy
Burning Sands
15% of 1931 decks
+15% synergy
Land Tax
14% of 507 decks
+8% synergy
Undergrowth Recon
13% of 245 decks
+12% synergy
Powerbalance
13% of 378 decks
+10% synergy
Kismet
12% of 507 decks
+12% synergy
Desolation
11% of 239 decks
+11% synergy
Citadel of Pain
11% of 1931 decks
+10% synergy
Stranglehold
10% of 1931 decks
+10% synergy
Fiery Emancipation
10% of 1856 decks
+6% synergy
Destructive Urge
10% of 1931 decks
+10% synergy
Painful Quandary
10% of 239 decks
+8% synergy
Roiling Vortex
10% of 1853 decks
+8% synergy
Mana Breach
10% of 523 decks
+9% synergy
Spellshock
9% of 1931 decks
+8% synergy
Desert Warfare
9% of 80 decks
+8% synergy
Mana Reflection
9% of 717 decks
+7% synergy
Phyrexian Arena
8% of 239 decks
-7% synergy
Song of Creation
8% of 73 decks
+6% synergy
Outpost Siege
8% of 1929 decks
+6% synergy
Swarm Intelligence
8% of 519 decks
+6% synergy
Artist's Talent
7% of 243 decks
+4% synergy
Dictate of the Twin Gods
7% of 1929 decks
+5% synergy
Smoke
7% of 1931 decks
+7% synergy
Aqueous Form
7% of 523 decks
+3% synergy
Rumbling Crescendo
7% of 1931 decks
+7% synergy
Double Vision
6% of 1856 decks
+5% synergy
City on Fire
6% of 1194 decks
+1% synergy
Burgeoning
6% of 717 decks
+2% synergy
Mana Vortex
6% of 523 decks
+5% synergy
Wild Growth
5% of 717 decks
-6% synergy
Mystic Remora
5% of 523 decks
-12% synergy
Planeswalkers
Ajani Vengeant
51% of 507 decks
+50% synergy
Koth, Fire of Resistance
18% of 1318 decks
+16% synergy
Ral, Crackling Wit
13% of 78 decks
+5% synergy
Wrenn and Six
13% of 699 decks
+11% synergy
Lord Windgrace
10% of 151 decks
+9% synergy
Wrenn and Realmbreaker
6% of 416 decks
+4% synergy
Koth of the Hammer
6% of 1931 decks
+6% synergy
Chandra, Torch of Defiance
6% of 1916 decks
+3% synergy
Nissa, Who Shakes the World
6% of 699 decks
+3% synergy
Dovin, Hand of Control
6% of 407 decks
+5% synergy
Utility Lands
Darksteel Citadel
53% of 1931 decks
+49% synergy
Strip Mine
42% of 1931 decks
+39% synergy
Field of Ruin
35% of 1907 decks
+32% synergy
Ghost Quarter
34% of 1931 decks
+32% synergy
Wasteland
27% of 1931 decks
+25% synergy
Volatile Fault
22% of 751 decks
+20% synergy
Memorial to War
19% of 1885 decks
+19% synergy
Bojuka Bog
17% of 239 decks
-13% synergy
Cascading Cataracts
17% of 1914 decks
+15% synergy
Valakut, the Molten Pinnacle
17% of 1931 decks
+14% synergy
Boseiju, Who Endures
15% of 608 decks
-5% synergy
Tectonic Edge
14% of 1931 decks
+13% synergy
Drownyard Temple
12% of 1916 decks
+11% synergy
Lavaclaw Reaches
10% of 239 decks
+9% synergy
Arena of Glory
9% of 319 decks
+0% synergy
Dust Bowl
8% of 1931 decks
+8% synergy
Reliquary Tower
7% of 1931 decks
-23% synergy
Argoth, Sanctum of Nature
7% of 559 decks
+5% synergy
Desert of the True
6% of 503 decks
+5% synergy
Shifting Woodland
6% of 104 decks
-4% synergy
Rogue's Passage
6% of 1931 decks
-14% synergy
Mystic Sanctuary
5% of 513 decks
-7% synergy
Encroaching Wastes
5% of 1931 decks
+5% synergy
Shefet Dunes
5% of 503 decks
+4% synergy
Mana Artifacts
Sol Ring
81% of 1931 decks
-3% synergy
Arcane Signet
69% of 1864 decks
-4% synergy
Azorius Signet
59% of 416 decks
+33% synergy
Izzet Signet
57% of 523 decks
+29% synergy
Boros Signet
55% of 507 decks
+32% synergy
Gruul Signet
45% of 717 decks
+33% synergy
Mind Stone
41% of 1931 decks
+24% synergy
Commander's Sphere
40% of 1929 decks
+25% synergy
Darksteel Ingot
40% of 1931 decks
+39% synergy
Fire Diamond
39% of 1931 decks
+34% synergy
Talisman of Creativity
32% of 514 decks
+4% synergy
Raugrin Crystal
32% of 406 decks
+31% synergy
Talisman of Conviction
32% of 495 decks
+9% synergy
Jeskai Banner
29% of 415 decks
+28% synergy
Moss Diamond
26% of 717 decks
+25% synergy
Thran Dynamo
24% of 1931 decks
+20% synergy
Rakdos Signet
24% of 239 decks
-6% synergy
Dimir Signet
23% of 71 decks
-7% synergy
Gilded Lotus
23% of 1931 decks
+19% synergy
Talisman of Dominance
20% of 71 decks
-12% synergy
Talisman of Progress
19% of 416 decks
-4% synergy
Talisman of Impulse
18% of 717 decks
+9% synergy
Selesnya Signet
16% of 101 decks
+7% synergy
Glittering Stockpile
16% of 1686 decks
+13% synergy
Timeless Lotus
15% of 33 decks
+2% synergy
Fellwar Stone
15% of 1931 decks
-6% synergy
Talisman of Indulgence
14% of 239 decks
-13% synergy
Golgari Signet
14% of 167 decks
+1% synergy
Skyclave Relic
12% of 1853 decks
+11% synergy
Chromatic Lantern
12% of 1931 decks
+2% synergy
Orzhov Signet
11% of 61 decks
-15% synergy
Sky Diamond
11% of 523 decks
+6% synergy
Throne of Eldraine
11% of 880 decks
+9% synergy
Coldsteel Heart
11% of 1931 decks
+10% synergy
Talisman of Hierarchy
10% of 60 decks
-14% synergy
Replicating Ring
10% of 1839 decks
+8% synergy
Marble Diamond
10% of 507 decks
+6% synergy
Boros Locket
9% of 496 decks
+8% synergy
Talisman of Resilience
8% of 151 decks
-4% synergy
Talisman of Unity
8% of 101 decks
+1% synergy
Izzet Locket
7% of 515 decks
+6% synergy
Thought Vessel
7% of 1916 decks
-10% synergy
Bloodstone Cameo
7% of 239 decks
+7% synergy
Dreamstone Hedron
7% of 1931 decks
+6% synergy
Talisman of Curiosity
7% of 73 decks
-6% synergy
Simic Signet
7% of 73 decks
-7% synergy
Liquimetal Torque
7% of 1832 decks
+3% synergy
Worn Powerstone
7% of 1931 decks
+4% synergy
Mana Crypt
6% of 1931 decks
-1% synergy
Extraplanar Lens
6% of 1931 decks
+5% synergy
Lands
Razortide Bridge
75% of 404 decks
+68% synergy
Rustvale Bridge
72% of 491 decks
+67% synergy
Silverbluff Bridge
63% of 509 decks
+57% synergy
Perilous Landscape
61% of 82 decks
+49% synergy
Twisted Landscape
55% of 22 decks
+35% synergy
Slagwoods Bridge
54% of 687 decks
+51% synergy
Mystic Monastery
53% of 415 decks
+26% synergy
Seething Landscape
50% of 14 decks
+35% synergy
Thornglint Bridge
47% of 99 decks
+45% synergy
Creosote Heath
45% of 29 decks
+41% synergy
Savage Lands
42% of 167 decks
+19% synergy
Command Tower
42% of 1931 decks
-32% synergy
Goldmire Bridge
41% of 58 decks
+36% synergy
Gnottvold Slumbermound
37% of 692 decks
+37% synergy
Raugrin Triome
35% of 406 decks
+9% synergy
Darkmoss Bridge
30% of 141 decks
+26% synergy
Steam Vents
29% of 523 decks
-10% synergy
Hallowed Fountain
28% of 416 decks
-12% synergy
Cinder Glade
28% of 707 decks
-11% synergy
Sacred Foundry
27% of 507 decks
-9% synergy
Ziatora's Proving Ground
27% of 127 decks
-5% synergy
Demolition Field
25% of 1545 decks
+22% synergy
Tanglepool Bridge
25% of 73 decks
+22% synergy
Ketria Triome
25% of 73 decks
-8% synergy
Mistvault Bridge
25% of 69 decks
+20% synergy
Xander's Lounge
24% of 62 decks
-3% synergy
Drossforge Bridge
24% of 209 decks
+20% synergy
Stomping Ground
23% of 717 decks
-18% synergy
Jetmir's Garden
23% of 92 decks
-10% synergy
Blood Crypt
22% of 239 decks
-17% synergy
Woodland Cemetery
22% of 167 decks
-7% synergy
Crumbling Necropolis
21% of 71 decks
-10% synergy
Boros Garrison
20% of 507 decks
+5% synergy
Izzet Boilerworks
20% of 523 decks
+4% synergy
Hedge Maze
20% of 35 decks
+6% synergy
Jungle Shrine
20% of 101 decks
-12% synergy
Azorius Chancery
20% of 416 decks
+5% synergy
Overgrown Tomb
19% of 167 decks
-23% synergy
Sheltering Landscape
19% of 16 decks
+6% synergy
Watery Grave
18% of 71 decks
-22% synergy
Temple of Triumph
18% of 507 decks
+1% synergy
Temple of Epiphany
18% of 522 decks
-0% synergy
Breeding Pool
18% of 73 decks
-23% synergy
Rootbound Crag
18% of 717 decks
-6% synergy
Dragonskull Summit
18% of 239 decks
-14% synergy
Bountiful Landscape
17% of 23 decks
+2% synergy
Evolving Wilds
17% of 1931 decks
-4% synergy
Spectator Seating
17% of 492 decks
-8% synergy
Sulfur Falls
17% of 523 decks
-14% synergy
Savai Triome
17% of 60 decks
-10% synergy