Fellwar Stone (Card)
Fellwar Stone
In 1208158 decks
21% of 5754361 decks
Mar 25, 2025
You Should Play Less Two-Mana Ramp
Three-mana ramp is better than two-mana ramp, and Michael Celani is tired of pretending it isn't.
Nov 16, 2024
Winter, Misanthropic Guide Deck Tech
Want to control your opponents by making them discard cards? Try this Winter, Misanthropic Guide deck from Unsummoned Skull!
Shorikai, Genesis Engine
56.10% of 18708 decks
10496 decks
The Ur-Dragon
31.00% of 33704 decks
10447 decks
Kinnan, Bonder Prodigy
75.16% of 13858 decks
10415 decks
Sidar Jabari of Zhalfir
57.40% of 16452 decks
9443 decks
Atraxa, Praetors' Voice
26.07% of 36011 decks
9387 decks
Valgavoth, Harrower of Souls
67.88% of 13046 decks
8855 decks
Kenrith, the Returned King
36.97% of 23920 decks
8844 decks
Sauron, the Dark Lord
32.32% of 26778 decks
8654 decks
Kaalia of the Vast
33.25% of 24993 decks
8310 decks
Jodah, the Unifier
40.24% of 20375 decks
8199 decks
Prosper, Tome-Bound
62.17% of 13139 decks
8168 decks
Tivit, Seller of Secrets
62.29% of 12274 decks
7645 decks
Breya, Etherium Shaper
47.76% of 15393 decks
7351 decks
Atraxa, Grand Unifier
47.89% of 14581 decks
6983 decks
Esika, God of the Tree
35.39% of 19625 decks
6945 decks
Alela, Cunning Conqueror
52.62% of 12826 decks
6749 decks
Nekusar, the Mindrazer
31.74% of 21135 decks
6708 decks
Ghyrson Starn, Kelermorph
39.58% of 16553 decks
6551 decks
New Cards
Call the Spirit Dragons
11% of 11595 decks
-1% synergy
Mardu Siegebreaker
10% of 21186 decks
+1% synergy
Ureni of the Unwritten
9% of 21742 decks
+2% synergy
Voice of Victory
9% of 75439 decks
+4% synergy
Temur Battlecrier
8% of 21742 decks
-1% synergy
High Synergy Cards
Mind Stone
31% of 1208158 decks
+14% synergy
Birds of Paradise
41% of 368425 decks
+14% synergy
Farseek
46% of 368425 decks
+12% synergy
Faeburrow Elder
22% of 220965 decks
+11% synergy
Mystic Remora
28% of 766421 decks
+11% synergy
An Offer You Can't Refuse
32% of 766421 decks
+10% synergy
Top Cards
Swords to Plowshares
70% of 615888 decks
+8% synergy
Path to Exile
50% of 615888 decks
+4% synergy
Counterspell
43% of 766421 decks
+0% synergy
Cultivate
42% of 368425 decks
-3% synergy
Blasphemous Act
36% of 710854 decks
+3% synergy
Chaos Warp
35% of 710854 decks
+4% synergy
Nature's Lore
34% of 368425 decks
+3% synergy
Rampant Growth
32% of 368425 decks
-3% synergy
Dark Ritual
31% of 729673 decks
+8% synergy
Beast Within
30% of 368425 decks
-7% synergy
Game Changers
Rhystic Study
36% of 766421 decks
+9% synergy
Cyclonic Rift
33% of 766421 decks
+6% synergy
Smothering Tithe
30% of 615888 decks
+6% synergy
Fierce Guardianship
25% of 766421 decks
+6% synergy
Vampiric Tutor
23% of 729673 decks
+6% synergy
Mystical Tutor
21% of 766421 decks
+7% synergy
Force of Will
18% of 766421 decks
+7% synergy
Ancient Tomb
17% of 1208158 decks
+7% synergy
Mana Vault
13% of 1208158 decks
+7% synergy
Chrome Mox
13% of 1208158 decks
+7% synergy
Creatures
Esper Sentinel
27% of 615888 decks
+7% synergy
Ignoble Hierarch
26% of 149307 decks
+1% synergy
Noble Hierarch
20% of 171327 decks
+4% synergy
Lotho, Corrupt Shirriff
19% of 351223 decks
+7% synergy
Delighted Halfling
19% of 361429 decks
+7% synergy
Bloom Tender
17% of 368425 decks
+9% synergy
Llanowar Elves
17% of 368425 decks
-4% synergy
Eternal Witness
17% of 368425 decks
-3% synergy
Solemn Simulacrum
16% of 1208158 decks
+2% synergy
Deathrite Shaman
16% of 224839 decks
+4% synergy
Orcish Bowmasters
15% of 700506 decks
+6% synergy
Kutzil, Malamet Exemplar
14% of 180497 decks
-0% synergy
Elvish Mystic
14% of 368425 decks
-3% synergy
Baleful Strix
14% of 450602 decks
+1% synergy
Grand Abolisher
13% of 615888 decks
+4% synergy
Morophon, the Boundless
13% of 116548 decks
-1% synergy
Sakura-Tribe Elder
13% of 368425 decks
-5% synergy
Thassa's Oracle
12% of 766421 decks
+5% synergy
Dockside Extortionist
12% of 710854 decks
+3% synergy
Ragavan, Nimble Pilferer
12% of 710854 decks
+4% synergy
Opposition Agent
12% of 729673 decks
+5% synergy
Seedborn Muse
11% of 368425 decks
+3% synergy
Storm-Kiln Artist
11% of 710854 decks
+2% synergy
Dauthi Voidwalker
11% of 729673 decks
+4% synergy
Phyrexian Metamorph
11% of 766421 decks
+4% synergy
Mayhem Devil
11% of 399749 decks
+1% synergy
Fyndhorn Elves
10% of 368425 decks
-2% synergy
Avacyn's Pilgrim
10% of 220965 decks
-4% synergy
Professional Face-Breaker
10% of 710854 decks
+2% synergy
Elvish Spirit Guide
10% of 368425 decks
+6% synergy
Simian Spirit Guide
10% of 710854 decks
+4% synergy
Two-Headed Hellkite
9% of 116548 decks
+2% synergy
Faerie Mastermind
9% of 766421 decks
+3% synergy
Hullbreaker Horror
9% of 766421 decks
+2% synergy
Sliver Hivelord
9% of 116548 decks
+2% synergy
Drannith Magistrate
9% of 615888 decks
+3% synergy
Sun Titan
9% of 615888 decks
-0% synergy
Notion Thief
9% of 450602 decks
+2% synergy
Archmage Emeritus
9% of 766421 decks
+1% synergy
Elves of Deep Shadow
9% of 224839 decks
-1% synergy
Etali, Primal Storm
9% of 710854 decks
-0% synergy
Blood Artist
9% of 729673 decks
-3% synergy
Ranger-Captain of Eos
9% of 615888 decks
+4% synergy
Miirym, Sentinel Wyrm
9% of 166620 decks
+2% synergy
Goblin Electromancer
8% of 407194 decks
-1% synergy
Aurelia, the Warleader
8% of 345554 decks
+1% synergy
Kinnan, Bonder Prodigy
8% of 262899 decks
+4% synergy
Enduring Vitality
8% of 173256 decks
+2% synergy
Sisay, Weatherlight Captain
8% of 116548 decks
+2% synergy
Etali, Primal Conqueror
8% of 237359 decks
-1% synergy
Instants
Generous Gift
27% of 615888 decks
+3% synergy
Assassin's Trophy
27% of 224839 decks
-4% synergy
Swan Song
26% of 766421 decks
+9% synergy
Boros Charm
25% of 345554 decks
+0% synergy
Heroic Intervention
24% of 368425 decks
-6% synergy
Negate
24% of 766421 decks
+1% synergy
Arcane Denial
23% of 766421 decks
+3% synergy
Anguished Unmaking
23% of 367032 decks
-1% synergy
Brainstorm
23% of 766421 decks
+3% synergy
Enlightened Tutor
22% of 615888 decks
+5% synergy
Terminate
21% of 399749 decks
+1% synergy
Deflecting Swat
21% of 710854 decks
+5% synergy
Dovin's Veto
21% of 392004 decks
+3% synergy
Worldly Tutor
20% of 368425 decks
+7% synergy
Teferi's Protection
19% of 615888 decks
-1% synergy
Mana Drain
19% of 766421 decks
+4% synergy
Rakdos Charm
17% of 399749 decks
+3% synergy
Frantic Search
16% of 766421 decks
+4% synergy
Bedevil
16% of 399749 decks
+3% synergy
Despark
15% of 367032 decks
+0% synergy
Force of Negation
15% of 766421 decks
+6% synergy
Growth Spiral
15% of 262899 decks
-7% synergy
Deadly Rollick
14% of 729673 decks
+3% synergy
Void Rend
14% of 241640 decks
+1% synergy
Flusterstorm
14% of 766421 decks
+7% synergy
Abrupt Decay
14% of 224839 decks
+4% synergy
Pact of Negation
14% of 766421 decks
+7% synergy
Abrade
13% of 710854 decks
+2% synergy
Sink into Stupor
13% of 470898 decks
+3% synergy
Pongify
13% of 766421 decks
+1% synergy
Mental Misstep
13% of 766421 decks
+7% synergy
Lightning Bolt
12% of 710854 decks
+1% synergy
Silence
12% of 615888 decks
+6% synergy
Eladamri's Call
11% of 220965 decks
+1% synergy
Veil of Summer
11% of 368425 decks
+6% synergy
Stroke of Midnight
11% of 550021 decks
+1% synergy
Snap
11% of 766421 decks
+4% synergy
Noxious Revival
10% of 368425 decks
+5% synergy
Reality Shift
10% of 766421 decks
+2% synergy
Opt
10% of 766421 decks
+1% synergy
Red Elemental Blast
10% of 710854 decks
+4% synergy
Thrill of Possibility
10% of 710854 decks
-0% synergy
Rapid Hybridization
10% of 766421 decks
+1% synergy
Mindbreak Trap
10% of 766421 decks
+5% synergy
Deadly Dispute
10% of 729673 decks
-1% synergy
Big Score
10% of 710854 decks
+1% synergy
Crop Rotation
10% of 368425 decks
+0% synergy
Withering Torment
10% of 341547 decks
+2% synergy
Putrefy
10% of 224839 decks
-6% synergy
Flawless Maneuver
9% of 615888 decks
-1% synergy
Sorceries
Kodama's Reach
29% of 368425 decks
-2% synergy
Three Visits
27% of 368425 decks
+3% synergy
Demonic Tutor
27% of 729673 decks
+6% synergy
Jeska's Will
22% of 710854 decks
+5% synergy
Toxic Deluge
22% of 729673 decks
+4% synergy
Feed the Swarm
21% of 729673 decks
+4% synergy
Reanimate
19% of 729673 decks
+2% synergy
Faithless Looting
19% of 710854 decks
+3% synergy
Windfall
18% of 766421 decks
+6% synergy
Vandalblast
17% of 710854 decks
+1% synergy
Damn
17% of 367032 decks
+1% synergy
Ruinous Ultimatum
17% of 199414 decks
-2% synergy
Culling Ritual
15% of 224839 decks
+4% synergy
Gamble
15% of 710854 decks
+5% synergy
Ponder
15% of 766421 decks
+2% synergy
Supreme Verdict
14% of 392004 decks
+0% synergy
Finale of Devastation
12% of 368425 decks
+4% synergy
Farewell
12% of 615888 decks
-1% synergy
Preordain
12% of 766421 decks
+2% synergy
Sevinne's Reclamation
12% of 615888 decks
+4% synergy
Imperial Seal
10% of 729673 decks
+5% synergy
Austere Command
10% of 615888 decks
-2% synergy
Diabolic Intent
10% of 729673 decks
+2% synergy
Night's Whisper
10% of 729673 decks
+1% synergy
Sign in Blood
10% of 729673 decks
+0% synergy
Eldritch Evolution
10% of 368425 decks
+5% synergy
Victimize
10% of 729673 decks
-2% synergy
Eerie Ultimatum
9% of 154197 decks
-3% synergy
Gitaxian Probe
9% of 766421 decks
+3% synergy
Neoform
8% of 262899 decks
+4% synergy
Wheel of Fortune
8% of 710854 decks
+4% synergy
Skyshroud Claim
8% of 368425 decks
-1% synergy
Explore
8% of 368425 decks
-2% synergy
Expressive Iteration
7% of 407194 decks
+1% synergy
Read the Bones
7% of 729673 decks
+0% synergy
Mana Geyser
7% of 710854 decks
+1% synergy
Mnemonic Betrayal
7% of 450602 decks
+4% synergy
Rite of Flame
7% of 710854 decks
+4% synergy
Fabricate
7% of 766421 decks
+1% synergy
Blasphemous Edict
7% of 278624 decks
-0% synergy
Time Wipe
7% of 392004 decks
+0% synergy
Damnation
7% of 729673 decks
-1% synergy
Villainous Wealth
7% of 172503 decks
-1% synergy
Decimate
6% of 237359 decks
-2% synergy
Rishkar's Expertise
6% of 368425 decks
-4% synergy
Treasure Cruise
6% of 766421 decks
+1% synergy
Wrath of God
6% of 615888 decks
-0% synergy
Distant Melody
5% of 766421 decks
+1% synergy
Green Sun's Zenith
5% of 368425 decks
-0% synergy
Beseech the Mirror
5% of 652141 decks
+2% synergy
Utility Artifacts
Lightning Greaves
28% of 1208158 decks
+3% synergy
Swiftfoot Boots
28% of 1208158 decks
+0% synergy
Commander's Sphere
19% of 1208158 decks
+5% synergy
Wayfarer's Bauble
14% of 1208158 decks
+5% synergy
Lotus Petal
14% of 1208158 decks
+7% synergy
The One Ring
14% of 1208158 decks
+6% synergy
Wishclaw Talisman
12% of 729673 decks
+6% synergy
Skullclamp
11% of 1208158 decks
-0% synergy
Bolas's Citadel
9% of 729673 decks
+0% synergy
Sensei's Divining Top
7% of 1208158 decks
+2% synergy
Fist of Suns
7% of 116548 decks
-0% synergy
Jeweled Lotus
7% of 1208158 decks
+3% synergy
The Great Henge
7% of 368425 decks
-3% synergy
Ashnod's Altar
7% of 1208158 decks
-1% synergy
Bident of Thassa
6% of 766421 decks
-0% synergy
Herald's Horn
5% of 1208158 decks
-1% synergy
Enchantments
Rhythm of the Wild
17% of 237359 decks
-6% synergy
Leyline of the Guildpact
17% of 85245 decks
+1% synergy
Phyrexian Arena
15% of 729673 decks
-0% synergy
Temur Ascendancy
14% of 166620 decks
-1% synergy
Garruk's Uprising
13% of 368425 decks
-3% synergy
Sylvan Library
13% of 368425 decks
+2% synergy
Annie Joins Up
13% of 103022 decks
+0% synergy
Black Market Connections
12% of 729673 decks
+1% synergy
Ghostly Prison
12% of 615888 decks
+1% synergy
Whirlwind of Thought
12% of 204109 decks
+2% synergy
Propaganda
12% of 766421 decks
-0% synergy
Animate Dead
12% of 729673 decks
+2% synergy
Underworld Breach
11% of 710854 decks
+5% synergy
Mirari's Wake
10% of 220965 decks
-3% synergy
Wild Growth
10% of 368425 decks
-1% synergy
Impact Tremors
9% of 710854 decks
-1% synergy
Maelstrom Nexus
9% of 116548 decks
+2% synergy
Necropotence
8% of 729673 decks
+3% synergy
Blind Obedience
8% of 615888 decks
+2% synergy
Warleader's Call
8% of 262092 decks
-0% synergy
Kindred Discovery
7% of 766421 decks
-0% synergy
Carpet of Flowers
7% of 368425 decks
+4% synergy
Windcrag Siege
7% of 37908 decks
+1% synergy
Trouble in Pairs
7% of 459793 decks
+2% synergy
Anointed Procession
7% of 615888 decks
-2% synergy
Utopia Sprawl
7% of 368425 decks
-1% synergy
Jeskai Ascendancy
6% of 204109 decks
+0% synergy
Doubling Season
6% of 368425 decks
-3% synergy
Brokers Ascendancy
6% of 171327 decks
-0% synergy
All-Out Assault
6% of 27918 decks
-0% synergy
The Kami War
6% of 116548 decks
-0% synergy
Guardian Project
6% of 368425 decks
-2% synergy
Goblin Bombardment
6% of 710854 decks
-1% synergy
Land Tax
5% of 615888 decks
-1% synergy
Sterling Grove
5% of 220965 decks
-2% synergy
Leyline of Mutation
5% of 53185 decks
-0% synergy
Reconnaissance Mission
5% of 766421 decks
+1% synergy
Battles
Invasion of Ikoria
6% of 368425 decks
+2% synergy
Planeswalkers
Teferi, Time Raveler
10% of 392004 decks
+4% synergy
Narset, Parter of Veils
7% of 766421 decks
+2% synergy
Tamiyo, Field Researcher
6% of 171327 decks
+2% synergy
Oko, Thief of Crowns
6% of 262899 decks
+1% synergy
Dihada, Binder of Wills
6% of 199414 decks
+1% synergy
Saheeli, Sublime Artificer
5% of 407194 decks
+1% synergy
Elspeth, Sun's Champion
5% of 615888 decks
+1% synergy
Utility Lands
Reliquary Tower
29% of 1208158 decks
-1% synergy
Bojuka Bog
28% of 729673 decks
-1% synergy
Otawara, Soaring City
23% of 766421 decks
+7% synergy
Boseiju, Who Endures
23% of 368425 decks
+4% synergy
Rogue's Passage
16% of 1208158 decks
-4% synergy
Mystic Sanctuary
12% of 766421 decks
+0% synergy
Urborg, Tomb of Yawgmoth
10% of 1208158 decks
+1% synergy
Urza's Saga
10% of 1208158 decks
+3% synergy
Takenuma, Abandoned Mire
10% of 729673 decks
-0% synergy
Vault of the Archangel
9% of 367032 decks
-3% synergy
Gaea's Cradle
9% of 368425 decks
+3% synergy
Kessig Wolf Run
8% of 237359 decks
-8% synergy
Eiganjo, Seat of the Empire
8% of 615888 decks
+0% synergy
Temple of the False God
8% of 1208158 decks
-2% synergy
Cabal Coffers
8% of 729673 decks
-3% synergy
Phyrexian Tower
7% of 729673 decks
-1% synergy
Seat of the Synod
7% of 766421 decks
+1% synergy
Shifting Woodland
7% of 230551 decks
+0% synergy
Mosswort Bridge
7% of 368425 decks
-4% synergy
Mistrise Village
7% of 87587 decks
+1% synergy
Great Furnace
6% of 710854 decks
+1% synergy
Slayers' Stronghold
6% of 345554 decks
+0% synergy
Minamo, School at Water's Edge
6% of 766421 decks
+2% synergy
Minas Tirith
6% of 590668 decks
-1% synergy
Arena of Glory
6% of 434617 decks
-0% synergy
Ancient Den
6% of 615888 decks
+1% synergy
Buried Ruin
5% of 1208158 decks
+0% synergy
Hall of Heliod's Generosity
5% of 615888 decks
-1% synergy
War Room
5% of 1208158 decks
-1% synergy
Mana Artifacts
Arcane Signet
95% of 1208158 decks
+23% synergy
Sol Ring
93% of 1208158 decks
+9% synergy
Talisman of Dominance
46% of 450602 decks
+14% synergy
Talisman of Creativity
43% of 407194 decks
+14% synergy
Talisman of Indulgence
39% of 399749 decks
+12% synergy
Rakdos Signet
37% of 399749 decks
+8% synergy
Izzet Signet
37% of 407194 decks
+10% synergy
Dimir Signet
37% of 450602 decks
+8% synergy
Talisman of Progress
36% of 392004 decks
+11% synergy
Talisman of Conviction
35% of 345554 decks
+11% synergy
Talisman of Hierarchy
35% of 367032 decks
+9% synergy
Azorius Signet
33% of 392004 decks
+8% synergy
Orzhov Signet
31% of 367032 decks
+4% synergy
Boros Signet
30% of 345554 decks
+8% synergy
Thought Vessel
26% of 1208158 decks
+9% synergy
Talisman of Curiosity
21% of 262899 decks
+8% synergy
Talisman of Impulse
15% of 237359 decks
+6% synergy
Simic Signet
15% of 262899 decks
+1% synergy
Chromatic Lantern
14% of 1208158 decks
+4% synergy
Talisman of Resilience
14% of 224839 decks
+1% synergy
Timeless Lotus
13% of 116548 decks
+1% synergy
Gruul Signet
13% of 237359 decks
+1% synergy
Golgari Signet
11% of 224839 decks
-1% synergy
Mox Opal
10% of 1208158 decks
+6% synergy
Talisman of Unity
10% of 220965 decks
+2% synergy
Mana Crypt
9% of 1208158 decks
+4% synergy
Mox Diamond
9% of 1208158 decks
+5% synergy
Mox Amber
8% of 1208158 decks
+4% synergy
Selesnya Signet
8% of 220965 decks
-1% synergy
Relic of Sauron
8% of 216663 decks
-1% synergy
Cursed Mirror
7% of 710854 decks
+2% synergy
Thran Dynamo
7% of 1208158 decks
+2% synergy
Fire Diamond
6% of 710854 decks
+1% synergy
Midnight Clock
6% of 766421 decks
+1% synergy
Everflowing Chalice
6% of 1208158 decks
+2% synergy
Charcoal Diamond
6% of 729673 decks
+1% synergy
Sky Diamond
6% of 766421 decks
+1% synergy
Liquimetal Torque
6% of 1208158 decks
+2% synergy
Decanter of Endless Water
5% of 1208158 decks
+1% synergy
Lands
Command Tower
84% of 1208158 decks
+10% synergy
Exotic Orchard
58% of 1208158 decks
+22% synergy
Watery Grave
47% of 450602 decks
+7% synergy
Hallowed Fountain
45% of 392004 decks
+5% synergy
Steam Vents
44% of 407194 decks
+6% synergy
Breeding Pool
44% of 262899 decks
+3% synergy
Godless Shrine
43% of 367032 decks
+3% synergy
Blood Crypt
42% of 399749 decks
+4% synergy
Overgrown Tomb
41% of 224839 decks
-1% synergy
Stomping Ground
40% of 237359 decks
-0% synergy
Sacred Foundry
38% of 345554 decks
+2% synergy
Temple Garden
37% of 220965 decks
-2% synergy
Sunken Hollow
36% of 450602 decks
+1% synergy
Smoldering Marsh
35% of 399749 decks
+2% synergy
Prairie Stream
35% of 392004 decks
+1% synergy
The World Tree
34% of 116548 decks
+2% synergy
Sulfur Falls
33% of 407194 decks
+1% synergy
Dragonskull Summit
33% of 399749 decks
+1% synergy
Shivan Reef
33% of 407194 decks
+5% synergy
Morphic Pool
32% of 450602 decks
+6% synergy
Training Center
32% of 407194 decks
+5% synergy
Caves of Koilos
31% of 367032 decks
+2% synergy
Crumbling Necropolis
31% of 227748 decks
-0% synergy
Battlefield Forge
30% of 345554 decks
+4% synergy
Cinder Glade
30% of 237359 decks
-8% synergy
Sea of Clouds
30% of 392004 decks
+4% synergy
Mystic Monastery
30% of 204109 decks
+2% synergy
Luxury Suite
30% of 399749 decks
+4% synergy
Arcane Sanctum
29% of 241640 decks
+1% synergy
Ketria Triome
29% of 166620 decks
-3% synergy
Nomad Outpost
29% of 199414 decks
+0% synergy
Clifftop Retreat
29% of 345554 decks
-2% synergy
Jungle Shrine
29% of 157466 decks
-4% synergy
Canopy Vista
28% of 220965 decks
-8% synergy
Vault of Champions
28% of 367032 decks
+2% synergy
Glacial Fortress
27% of 392004 decks
-0% synergy
Jetmir's Garden
27% of 157466 decks
-4% synergy
Drowned Catacomb
27% of 450602 decks
-0% synergy
Frontier Bivouac
27% of 166620 decks
-2% synergy
Seaside Citadel
26% of 171327 decks
+0% synergy
Spectator Seating
26% of 345554 decks
+2% synergy
Spara's Headquarters
26% of 171327 decks
-3% synergy
Rejuvenating Springs
26% of 262899 decks
-2% synergy
Ziatora's Proving Ground
26% of 149307 decks
-4% synergy
Xander's Lounge
26% of 227748 decks
+0% synergy
Yavimaya Coast
26% of 262899 decks
-1% synergy
Isolated Chapel
26% of 367032 decks
-4% synergy
Opulent Palace
25% of 172503 decks
-2% synergy
Raffine's Tower
25% of 241640 decks
-1% synergy
Sulfurous Springs
25% of 399749 decks
+4% synergy