Two-Headed Giant (Card)
Two-Headed Giant
In 3657 decks
0% of 2730985 decks
Okaun, Eye of Chaos // Zndrsplt, Eye of Wisdom
26.06% of 6746 decks
1758 decks
Yusri, Fortune's Flame
25.66% of 3005 decks
771 decks
Aegar, the Freezing Flame
12.02% of 2871 decks
345 decks
Ruhan of the Fomori
3.82% of 2358 decks
90 decks
Lovisa Coldeyes
8.40% of 762 decks
64 decks
Gornog, the Red Reaper
2.89% of 1593 decks
46 decks
Kalemne, Disciple of Iroas
5.36% of 783 decks
42 decks
Krark, the Thumbless // Sakashima of a Thousand Faces
0.68% of 4876 decks
33 decks
Brion Stoutarm
0.89% of 3140 decks
28 decks
Isshin, Two Heavens as One
0.12% of 19989 decks
24 decks
Krark, the Thumbless // Vial Smasher the Fierce
2.78% of 648 decks
18 decks
Rakdos, the Showstopper
1.48% of 1220 decks
18 decks
Animar, Soul of Elements
0.07% of 17528 decks
12 decks
Farideh, Devil's Chosen
1.17% of 943 decks
11 decks
Beluna Grandsquall
0.24% of 3773 decks
9 decks
Mr. House, President and CEO
0.06% of 13894 decks
9 decks
Breeches, the Blastmaker
1.25% of 720 decks
9 decks
Krark, the Thumbless
6.77% of 133 decks
9 decks
New Cards
Become the Avalanche
100% of 1 decks
+99% synergy
Auroral Procession
50% of 2 decks
+49% synergy
Temur Battlecrier
50% of 2 decks
+46% synergy
Thunder of Unity
33% of 3 decks
+32% synergy
Herd Heirloom
25% of 4 decks
+24% synergy
High Synergy Cards
Stitch in Time
77% of 3178 decks
+75% synergy
Squee's Revenge
73% of 3178 decks
+72% synergy
Tavern Scoundrel
73% of 3657 decks
+72% synergy
Krark's Thumb
71% of 3657 decks
+70% synergy
Chance Encounter
71% of 3657 decks
+70% synergy
Fiery Gambit
69% of 3657 decks
+68% synergy
Mutalith Vortex Beast
65% of 3178 decks
+64% synergy
Ral Zarek
64% of 3178 decks
+63% synergy
Goblin Traprunner
63% of 3657 decks
+62% synergy
Krark, the Thumbless
63% of 3657 decks
+62% synergy
Top Cards
Invert Polarity
66% of 1719 decks
+62% synergy
Counterspell
58% of 3178 decks
+16% synergy
Goblin Archaeologist
58% of 3657 decks
+58% synergy
Mirror March
57% of 3657 decks
+56% synergy
Yusri, Fortune's Flame
56% of 3178 decks
+55% synergy
Planar Chaos
56% of 3657 decks
+55% synergy
Boompile
55% of 3657 decks
+55% synergy
Karplusan Minotaur
54% of 3657 decks
+54% synergy
Creepy Doll
54% of 3657 decks
+54% synergy
Chaos Warp
54% of 3657 decks
+23% synergy
Game Changers
Cyclonic Rift
14% of 3178 decks
-13% synergy
Rhystic Study
12% of 3178 decks
-15% synergy
Jeska's Will
11% of 3657 decks
-6% synergy
Smothering Tithe
9% of 306 decks
-15% synergy
Demonic Tutor
9% of 189 decks
-12% synergy
Mystical Tutor
8% of 3178 decks
-6% synergy
Fierce Guardianship
8% of 3178 decks
-10% synergy
Vampiric Tutor
5% of 189 decks
-12% synergy
Creatures
Realm-Cloaked Giant
53% of 306 decks
+52% synergy
Tribute Mage
52% of 3178 decks
+50% synergy
Mogg Assassin
52% of 3657 decks
+51% synergy
Goblin Kaboomist
49% of 3657 decks
+49% synergy
Sun Titan
42% of 306 decks
+32% synergy
Beanstalk Giant
39% of 158 decks
+37% synergy
Hundred-Handed One
36% of 306 decks
+36% synergy
Niv-Mizzet, Parun
36% of 3178 decks
+28% synergy
Chaotic Goo
34% of 3657 decks
+34% synergy
Breeches, the Blastmaker
34% of 1929 decks
+33% synergy
Storvald, Frost Giant Jarl
34% of 44 decks
+33% synergy
Brion Stoutarm
32% of 306 decks
+32% synergy
Sunder Shaman
32% of 158 decks
+31% synergy
Tavern Swindler
31% of 189 decks
+31% synergy
Jareth, Leonine Titan
31% of 306 decks
+31% synergy
Ondu Giant
31% of 158 decks
+31% synergy
Skyclaw Thrash
31% of 3178 decks
+31% synergy
Grasping Giant
30% of 306 decks
+30% synergy
Kalemne, Disciple of Iroas
30% of 306 decks
+30% synergy
Goblin Assassin
30% of 3657 decks
+30% synergy
The Locust God
30% of 3178 decks
+25% synergy
Goblin Bangchuckers
29% of 3657 decks
+29% synergy
Frenetic Efreet
28% of 3178 decks
+28% synergy
Zndrsplt, Eye of Wisdom
27% of 3178 decks
+26% synergy
Spark Double
26% of 3178 decks
+19% synergy
Earthshaker Giant
26% of 158 decks
+26% synergy
Kalemne's Captain
25% of 306 decks
+25% synergy
Volatile Rig
25% of 3657 decks
+25% synergy
Zurgo, Thunder's Decree
25% of 4 decks
+24% synergy
Bone-Cairn Butcher
25% of 4 decks
+23% synergy
Outland Colossus
25% of 158 decks
+25% synergy
Triskaidekaphile
25% of 3178 decks
+22% synergy
Okaun, Eye of Chaos
25% of 3657 decks
+24% synergy
Crazed Firecat
24% of 3657 decks
+24% synergy
Swathcutter Giant
23% of 306 decks
+23% synergy
Kediss, Emberclaw Familiar
22% of 3657 decks
+19% synergy
Oathsworn Giant
21% of 306 decks
+21% synergy
Goblin Electromancer
21% of 3178 decks
+11% synergy
Desolation Giant
20% of 306 decks
+20% synergy
Uro, Titan of Nature's Wrath
20% of 85 decks
+15% synergy
Ral, Monsoon Mage
20% of 1727 decks
+18% synergy
Rakdos, the Showstopper
19% of 189 decks
+17% synergy
Goblin Engineer
18% of 3657 decks
+15% synergy
Psychosis Crawler
18% of 3657 decks
+15% synergy
Scoria Wurm
18% of 3657 decks
+18% synergy
Stormkeld Vanguard
17% of 138 decks
+17% synergy
Palisade Giant
17% of 306 decks
+17% synergy
Avenger of the Fallen
17% of 6 decks
+16% synergy
Loyal Inventor
16% of 1600 decks
+15% synergy
Calamity Bearer
16% of 3657 decks
+16% synergy
Instants
Desperate Gambit
44% of 3657 decks
+44% synergy
Negate
42% of 3178 decks
+19% synergy
Fighting Chance
41% of 3657 decks
+41% synergy
Swords to Plowshares
35% of 306 decks
-27% synergy
Puppet's Verdict
31% of 3657 decks
+31% synergy
Boros Charm
30% of 306 decks
+5% synergy
Brainstorm
30% of 3178 decks
+10% synergy
Muddle the Mixture
29% of 3178 decks
+24% synergy
Path to Exile
27% of 306 decks
-20% synergy
Soul's Fire
23% of 3657 decks
+22% synergy
Temur Battle Rage
23% of 3657 decks
+20% synergy
Chaotic Strike
22% of 3657 decks
+21% synergy
Fling
21% of 3657 decks
+19% synergy
Legion Leadership
18% of 137 decks
+13% synergy
Terminate
18% of 189 decks
-2% synergy
Beast Within
18% of 158 decks
-20% synergy
Izzet Charm
18% of 3178 decks
+12% synergy
Generous Gift
17% of 306 decks
-8% synergy
Abrade
17% of 3657 decks
+5% synergy
Arcane Denial
16% of 3178 decks
-4% synergy
Wear // Tear
16% of 306 decks
+8% synergy
Aleatory
15% of 3657 decks
+15% synergy
An Offer You Can't Refuse
15% of 3178 decks
-7% synergy
Bedevil
14% of 189 decks
+1% synergy
Opt
14% of 3178 decks
+5% synergy
Pongify
14% of 3178 decks
+2% synergy
Frantic Search
14% of 3178 decks
+1% synergy
Growth Spiral
13% of 85 decks
-9% synergy
Lightning Bolt
13% of 3657 decks
+2% synergy
Return of the Wildspeaker
13% of 158 decks
-0% synergy
Heroic Intervention
12% of 158 decks
-18% synergy
Squash
12% of 3657 decks
+12% synergy
Crush Underfoot
12% of 3657 decks
+12% synergy
Whir of Invention
11% of 3178 decks
+9% synergy
Rakdos Charm
11% of 189 decks
-3% synergy
Odds // Ends
11% of 145 decks
+11% synergy
Dark Ritual
11% of 189 decks
-12% synergy
Wild Magic Surge
10% of 3657 decks
+8% synergy
Kazuul's Fury
10% of 3657 decks
+8% synergy
Despark
10% of 79 decks
-5% synergy
Fact or Fiction
10% of 3178 decks
+4% synergy
Master Warcraft
9% of 306 decks
+8% synergy
Flick a Coin
9% of 3137 decks
+8% synergy
Reality Shift
9% of 3178 decks
+0% synergy
Mana Drain
9% of 3178 decks
-6% synergy
Counterflux
9% of 3178 decks
+7% synergy
Harrow
9% of 158 decks
-0% synergy
Shadow Rift
9% of 3178 decks
+7% synergy
Deflecting Palm
8% of 306 decks
+3% synergy
Murder
8% of 189 decks
+4% synergy
Sorceries
Game of Chaos
51% of 3657 decks
+50% synergy
Mana Clash
51% of 3657 decks
+50% synergy
Molten Birth
46% of 3657 decks
+46% synergy
Cultivate
44% of 158 decks
-1% synergy
Blasphemous Act
39% of 3657 decks
+6% synergy
Fabricate
39% of 3178 decks
+33% synergy
Kodama's Reach
30% of 158 decks
-0% synergy
Rampant Growth
30% of 158 decks
-4% synergy
Gamble
30% of 3657 decks
+20% synergy
Chandra's Ignition
27% of 3657 decks
+22% synergy
Farseek
25% of 158 decks
-10% synergy
Slip Through Space
25% of 3178 decks
+23% synergy
Ponder
23% of 3178 decks
+11% synergy
Vandalblast
22% of 3657 decks
+6% synergy
Nature's Lore
20% of 158 decks
-12% synergy
Three Visits
18% of 158 decks
-6% synergy
Feudkiller's Verdict
18% of 306 decks
+18% synergy
Reckless Handling
18% of 3525 decks
+16% synergy
Winter Sky
17% of 3657 decks
+17% synergy
Preordain
17% of 3178 decks
+7% synergy
Diabolic Tutor
15% of 189 decks
+9% synergy
Read the Bones
14% of 189 decks
+6% synergy
Enter the Enigma
12% of 1252 decks
+10% synergy
Seize the Day
12% of 3657 decks
+10% synergy
Faithless Looting
12% of 3657 decks
-4% synergy
Artful Dodge
12% of 3178 decks
+11% synergy
Genesis Ultimatum
12% of 85 decks
+6% synergy
Last One Standing
12% of 189 decks
+11% synergy
Glimpse the Cosmos
11% of 3178 decks
+11% synergy
Austere Command
11% of 306 decks
-1% synergy
Rishkar's Expertise
10% of 158 decks
-0% synergy
Mana Geyser
10% of 3657 decks
+3% synergy
Skyshroud Claim
9% of 158 decks
+1% synergy
Gravitic Punch
9% of 3657 decks
+9% synergy
Danse Macabre
9% of 189 decks
+9% synergy
Vindicate
9% of 79 decks
+3% synergy
The Nipton Lottery
9% of 104 decks
+8% synergy
Zndrsplt's Judgment
9% of 3178 decks
+8% synergy
Myrkul's Edict
8% of 189 decks
+8% synergy
Dance with Calamity
8% of 3642 decks
+8% synergy
Windfall
8% of 3178 decks
-4% synergy
Explosive Vegetation
8% of 158 decks
+5% synergy
Migration Path
8% of 158 decks
+5% synergy
Fire Giant's Fury
8% of 3657 decks
+8% synergy
Serum Visions
8% of 3178 decks
+4% synergy
Mizzium Mortars
8% of 3657 decks
+6% synergy
Shamanic Revelation
8% of 158 decks
-1% synergy
Response // Resurgence
8% of 306 decks
+6% synergy
Wheel of Misfortune
7% of 3657 decks
+4% synergy
Last March of the Ents
7% of 150 decks
+3% synergy
Utility Artifacts
Swiftfoot Boots
45% of 3657 decks
+18% synergy
Crooked Scales
33% of 3657 decks
+33% synergy
Lightning Greaves
31% of 3657 decks
+6% synergy
Sorcerer's Strongbox
29% of 3657 decks
+29% synergy
Mind Stone
28% of 3657 decks
+12% synergy
Commander's Sphere
26% of 3657 decks
+11% synergy
Whispersilk Cloak
22% of 3657 decks
+18% synergy
Plasma Caster
17% of 2365 decks
+17% synergy
Wirefly Hive
16% of 3657 decks
+16% synergy
Strionic Resonator
16% of 3657 decks
+12% synergy
Wayfarer's Bauble
12% of 3657 decks
+3% synergy
Basilisk Collar
12% of 3657 decks
+9% synergy
Loxodon Warhammer
12% of 3657 decks
+10% synergy
Shadowspear
12% of 3657 decks
+9% synergy
Sword of Vengeance
11% of 3657 decks
+9% synergy
Boros Cluestone
10% of 306 decks
+10% synergy
Boros Locket
9% of 306 decks
+8% synergy
Fist of Suns
9% of 34 decks
+2% synergy
Wand of Wonder
8% of 3657 decks
+7% synergy
Monster Manual
8% of 158 decks
+6% synergy
The Great Henge
8% of 158 decks
-2% synergy
Spellbook
7% of 3657 decks
+6% synergy
Embercleave
7% of 3657 decks
+4% synergy
Commander's Plate
7% of 3657 decks
+4% synergy
Herald's Horn
6% of 3657 decks
-0% synergy
Bottle of Suleiman
6% of 3657 decks
+6% synergy
Mithril Coat
6% of 3390 decks
+1% synergy
Brotherhood Regalia
6% of 1855 decks
+3% synergy
Ruby Medallion
6% of 3657 decks
+3% synergy
Jeskai Banner
6% of 145 decks
+5% synergy
Izzet Locket
6% of 3178 decks
+4% synergy
Helm of the Host
5% of 3657 decks
+2% synergy
Rakdos Locket
5% of 189 decks
+4% synergy
Giant's Amulet
5% of 3178 decks
+5% synergy
Sunforger
5% of 306 decks
+1% synergy
Bag of Tricks
5% of 158 decks
+5% synergy
Mardu Banner
5% of 79 decks
+4% synergy
Enchantments
Impulsive Maneuvers
44% of 3657 decks
+44% synergy
Tide of War
34% of 3657 decks
+34% synergy
Garruk's Uprising
32% of 158 decks
+16% synergy
Goblin Bomb
30% of 3657 decks
+30% synergy
Wizard Class
29% of 3178 decks
+25% synergy
Risky Move
26% of 3657 decks
+25% synergy
Temur Ascendancy
21% of 85 decks
+7% synergy
Favor of the Mighty
21% of 306 decks
+21% synergy
Propaganda
20% of 3178 decks
+8% synergy
All-Out Assault
20% of 5 decks
+18% synergy
Goblin Festival
20% of 3657 decks
+20% synergy
Footfall Crater
14% of 3657 decks
+14% synergy
Rhythm of the Wild
13% of 158 decks
-10% synergy
Aqueous Form
13% of 3178 decks
+9% synergy
Teferi's Ageless Insight
12% of 3178 decks
+7% synergy
Colossal Majesty
12% of 158 decks
+9% synergy
Invasion of the Giants
11% of 3178 decks
+11% synergy
Battle of Frost and Fire
11% of 3178 decks
+11% synergy
The Apprentice's Folly
11% of 2716 decks
+10% synergy
Roaring Furnace // Steaming Sauna
10% of 1243 decks
+8% synergy
Mardu Ascendancy
10% of 79 decks
+8% synergy
Powerbalance
10% of 1975 decks
+8% synergy
Steel of the Godhead
9% of 145 decks
+7% synergy
Warstorm Surge
8% of 3657 decks
+3% synergy
Mayael's Aria
8% of 61 decks
+6% synergy
Mirari's Wake
8% of 61 decks
-5% synergy
Up the Beanstalk
8% of 137 decks
+4% synergy
Campaign of Vengeance
8% of 79 decks
+7% synergy
Raised by Giants
8% of 158 decks
+7% synergy
Unnatural Growth
8% of 158 decks
+2% synergy
Captive Audience
7% of 189 decks
+6% synergy
Banishing Light
7% of 306 decks
+5% synergy
Reflections of Littjara
7% of 3178 decks
+2% synergy
Rising of the Day
6% of 3416 decks
+1% synergy
Liliana's Contract
6% of 189 decks
+5% synergy
Fervent Charge
6% of 79 decks
+3% synergy
Elemental Bond
6% of 158 decks
+1% synergy
Wild Growth
6% of 158 decks
-5% synergy
Folk Hero
6% of 306 decks
+5% synergy
Duelist's Heritage
6% of 306 decks
+4% synergy
Giant's Grasp
6% of 3178 decks
+6% synergy
Proft's Eidetic Memory
6% of 2226 decks
+4% synergy
Possibility Storm
6% of 3657 decks
+5% synergy
Frantic Strength
5% of 56 decks
+5% synergy
Phyrexian Arena
5% of 189 decks
-10% synergy
Fires of Yavimaya
5% of 158 decks
+1% synergy
Exploration
5% of 158 decks
-3% synergy
Planeswalkers
Kiora, Behemoth Beckoner
7% of 85 decks
+4% synergy
Utility Lands
Reliquary Tower
57% of 3657 decks
+27% synergy
Rogue's Passage
40% of 3657 decks
+20% synergy
Buried Ruin
23% of 3657 decks
+18% synergy
Temple of the False God
18% of 3657 decks
+8% synergy
Academy Ruins
17% of 3178 decks
+12% synergy
Slayers' Stronghold
15% of 306 decks
+10% synergy
Sunhome, Fortress of the Legion
14% of 306 decks
+9% synergy
Kessig Wolf Run
13% of 158 decks
-3% synergy
Mystic Sanctuary
12% of 3178 decks
+1% synergy
Mosswort Bridge
12% of 158 decks
+2% synergy
Desolate Lighthouse
11% of 3178 decks
+7% synergy
Dalkovan Encampment
11% of 9 decks
+11% synergy
Bojuka Bog
11% of 189 decks
-19% synergy
Spinerock Knoll
10% of 3657 decks
+6% synergy
Arena of Glory
8% of 1946 decks
+2% synergy
Restless Spire
8% of 2716 decks
+6% synergy
Inventors' Fair
8% of 3657 decks
+4% synergy
Wandering Fumarole
7% of 3178 decks
+6% synergy
Great Furnace
7% of 3657 decks
+1% synergy
Secluded Steppe
7% of 306 decks
+4% synergy
Hall of Storm Giants
6% of 3178 decks
+6% synergy
Otawara, Soaring City
6% of 3178 decks
-11% synergy
Boseiju, Who Endures
6% of 158 decks
-13% synergy
Drifting Meadow
6% of 306 decks
+5% synergy
Tolaria West
5% of 3178 decks
+4% synergy
Access Tunnel
5% of 3657 decks
+3% synergy
Vault of the Archangel
5% of 79 decks
-6% synergy
Mana Artifacts
Sol Ring
83% of 3657 decks
-1% synergy
Arcane Signet
75% of 3657 decks
+3% synergy
Izzet Signet
61% of 3178 decks
+34% synergy
Thought Vessel
48% of 3657 decks
+31% synergy
Talisman of Creativity
43% of 3178 decks
+14% synergy
Boros Signet
41% of 306 decks
+18% synergy
Rakdos Signet
29% of 189 decks
-0% synergy
Azorius Signet
28% of 145 decks
+3% synergy
Gruul Signet
22% of 158 decks
+11% synergy
Talisman of Conviction
20% of 306 decks
-3% synergy
Decanter of Endless Water
20% of 3657 decks
+16% synergy
Fellwar Stone
17% of 3657 decks
-4% synergy
Simic Signet
15% of 85 decks
+1% synergy
Orzhov Signet
14% of 79 decks
-13% synergy
Fire Diamond
14% of 3657 decks
+8% synergy
Sky Diamond
12% of 3178 decks
+7% synergy
Golgari Signet
11% of 54 decks
-1% synergy
Talisman of Progress
10% of 145 decks
-14% synergy
Talisman of Indulgence
10% of 189 decks
-17% synergy
Marble Diamond
9% of 306 decks
+5% synergy
Mana Crypt
9% of 3657 decks
+3% synergy
Talisman of Curiosity
8% of 85 decks
-5% synergy
Talisman of Unity
8% of 61 decks
+1% synergy
Selesnya Signet
7% of 61 decks
-2% synergy
Dimir Signet
6% of 65 decks
-23% synergy
Charcoal Diamond
6% of 189 decks
+1% synergy
Talisman of Impulse
6% of 158 decks
-4% synergy
Thran Dynamo
6% of 3657 decks
+1% synergy
Raugrin Crystal
6% of 145 decks
+4% synergy
Lands
Command Tower
77% of 3657 decks
+3% synergy
Sulfur Falls
59% of 3178 decks
+27% synergy
Mystic Monastery
53% of 145 decks
+26% synergy
Izzet Boilerworks
51% of 3178 decks
+35% synergy
Temple of Epiphany
51% of 3178 decks
+32% synergy
Shivan Reef
43% of 3178 decks
+16% synergy
Ancient Amphitheater
41% of 306 decks
+40% synergy
Frostboil Snarl
37% of 3178 decks
+23% synergy
Frontier Bivouac
35% of 85 decks
+8% synergy
Training Center
32% of 3178 decks
+6% synergy
Crumbling Necropolis
32% of 65 decks
+1% synergy
Cascade Bluffs
32% of 3178 decks
+20% synergy
Raugrin Triome
32% of 145 decks
+6% synergy
Nomad Outpost
30% of 79 decks
+2% synergy
Stormcarved Coast
30% of 3178 decks
+12% synergy
Boros Garrison
30% of 306 decks
+16% synergy
Cinder Glade
30% of 158 decks
-9% synergy
Myriad Landscape
29% of 3657 decks
+11% synergy
Clifftop Retreat
29% of 306 decks
-1% synergy
Swiftwater Cliffs
29% of 3178 decks
+22% synergy
Temple of Triumph
28% of 306 decks
+12% synergy
Smoldering Marsh
28% of 189 decks
-5% synergy
Steam Vents
28% of 3178 decks
-10% synergy
Savage Lands
28% of 54 decks
+4% synergy
Exotic Orchard
27% of 3657 decks
-8% synergy
Bloodfell Caves
26% of 189 decks
+19% synergy
Evolving Wilds
26% of 3657 decks
+5% synergy
Ziatora's Proving Ground
26% of 54 decks
-4% synergy
Dragonskull Summit
26% of 189 decks
-6% synergy
Ketria Triome
26% of 85 decks
-6% synergy
Jetmir's Garden
25% of 61 decks
-7% synergy
Perilous Landscape
25% of 57 decks
+17% synergy
Hallowed Fountain
24% of 145 decks
-16% synergy
Stomping Ground
24% of 158 decks
-16% synergy
Glacial Fortress
23% of 145 decks
-4% synergy
Rakdos Carnarium
23% of 189 decks
+9% synergy
Xander's Lounge
23% of 65 decks
-3% synergy
Jungle Shrine
23% of 61 decks
-9% synergy
Blood Crypt
22% of 189 decks
-16% synergy
Wind-Scarred Crag
22% of 306 decks
+15% synergy
Gruul Turf
22% of 158 decks
+6% synergy
Prairie Stream
21% of 145 decks
-12% synergy
Path of Ancestry
21% of 3657 decks
-0% synergy
Temple of Malice
21% of 189 decks
+7% synergy
Spire Garden
21% of 158 decks
-3% synergy
The World Tree
21% of 34 decks
-12% synergy
Scoured Barrens
20% of 79 decks
+11% synergy
Indatha Triome
20% of 35 decks
-10% synergy
Sacred Foundry
20% of 306 decks
-16% synergy
Canopy Vista
20% of 61 decks
-17% synergy