Rust Elemental (Card)
Rust Elemental
In 10417 decks
0% of 4829758 decks
Oct 24, 2019
Conditions Allow - Rohgahh of Kher Keep
It's a Kobold strategy, Cotton, let's see if it pays off for 'em.
Jon Irenicus, Shattered One
56.95% of 7601 decks
4329 decks
Zedruu the Greathearted
52.12% of 7197 decks
3751 decks
Blim, Comedic Genius
57.55% of 3166 decks
1822 decks
Bill Ferny, Bree Swindler
40.81% of 272 decks
111 decks
Inniaz, the Gale Force
5.21% of 1458 decks
76 decks
Codie, Vociferous Codex
0.80% of 5623 decks
45 decks
Sol'Kanar the Tainted
11.41% of 368 decks
42 decks
The Beamtown Bullies
0.48% of 4840 decks
23 decks
Karona, False God
0.68% of 3067 decks
21 decks
Jodah, Archmage Eternal
0.15% of 8074 decks
12 decks
Esika, God of the Tree
0.05% of 17767 decks
8 decks
Kenrith, the Returned King
0.04% of 21513 decks
8 decks
Aminatou, the Fateshifter
0.10% of 6300 decks
6 decks
Pramikon, Sky Rampart
0.11% of 4459 decks
5 decks
Child of Alara
0.08% of 5025 decks
4 decks
Marchesa, the Black Rose
0.04% of 9321 decks
4 decks
Xantcha, Sleeper Agent
0.10% of 3040 decks
3 decks
The Twelfth Doctor // Clara Oswald
0.65% of 462 decks
3 decks
New Cards
Blasphemous Edict
95% of 37 decks
+60% synergy
Withering Torment
61% of 237 decks
+39% synergy
Roaring Furnace // Steaming Sauna
55% of 44 decks
+38% synergy
Marina Vendrell's Grimoire
50% of 460 decks
+49% synergy
The Lord of Pain
48% of 40 decks
+25% synergy
High Synergy Cards
Archfiend of the Dross
88% of 5496 decks
+87% synergy
Nine Lives
87% of 3906 decks
+87% synergy
Bazaar Trader
82% of 5853 decks
+82% synergy
Abyssal Persecutor
82% of 6411 decks
+81% synergy
Steel Golem
80% of 10418 decks
+80% synergy
Humble Defector
81% of 5848 decks
+79% synergy
Role Reversal
80% of 3925 decks
+79% synergy
Demonic Taskmaster
77% of 6411 decks
+77% synergy
Ebon Drake
77% of 6411 decks
+76% synergy
Xantcha, Sleeper Agent
78% of 2058 decks
+76% synergy
Top Cards
Alexios, Deimos of Kosmos
74% of 950 decks
+70% synergy
Harmless Offering
74% of 5842 decks
+73% synergy
Aggressive Mining
73% of 5849 decks
+73% synergy
Yes Man, Personal Securitron
72% of 1377 decks
+71% synergy
Captive Audience
71% of 2058 decks
+70% synergy
Plague Reaver
69% of 6406 decks
+69% synergy
Shifting Grift
68% of 2220 decks
+67% synergy
Ghostly Prison
67% of 3988 decks
+55% synergy
Propaganda
65% of 8527 decks
+54% synergy
Terminate
64% of 2059 decks
+43% synergy
Creatures
Grid Monitor
64% of 10418 decks
+64% synergy
Wretched Anurid
63% of 6411 decks
+63% synergy
Flesh Reaver
62% of 6411 decks
+62% synergy
Khârn the Betrayer
60% of 5117 decks
+59% synergy
Drinker of Sorrow
56% of 6411 decks
+56% synergy
Evil Eye of Urborg
56% of 6411 decks
+56% synergy
Evil Eye of Orms-by-Gore
56% of 6411 decks
+56% synergy
Coveted Falcon
54% of 2805 decks
+54% synergy
Desecration Elemental
54% of 6411 decks
+53% synergy
Master of the Feast
53% of 6411 decks
+52% synergy
Phyrexian Negator
52% of 6411 decks
+52% synergy
Greater Harvester
52% of 6411 decks
+52% synergy
Rotting Regisaur
52% of 6408 decks
+51% synergy
Goldnight Castigator
52% of 5846 decks
+51% synergy
Sygg, River Cutthroat
51% of 4545 decks
+49% synergy
Goblin Cadets
49% of 5853 decks
+49% synergy
Baleful Strix
48% of 4545 decks
+35% synergy
Pramikon, Sky Rampart
47% of 3831 decks
+45% synergy
Ebonblade Reaper
47% of 6411 decks
+46% synergy
Akroan Horse
44% of 10416 decks
+44% synergy
Lord of the Pit
44% of 6411 decks
+43% synergy
The Second Doctor
42% of 1923 decks
+39% synergy
The Master, Mesmerist
41% of 1973 decks
+41% synergy
Felidar Sovereign
40% of 3988 decks
+37% synergy
Cinder Giant
39% of 5853 decks
+38% synergy
Phyrexian Vatmother
36% of 6411 decks
+36% synergy
Priest of the Blood Rite
35% of 6411 decks
+35% synergy
Thought Eater
35% of 8527 decks
+35% synergy
Perplexing Chimera
35% of 8526 decks
+34% synergy
Windborn Muse
34% of 3988 decks
+30% synergy
Vedalken Plotter
32% of 8527 decks
+32% synergy
Vislor Turlough
31% of 2828 decks
+31% synergy
Liege of the Pit
30% of 6411 decks
+30% synergy
Sleeper Agent
30% of 6411 decks
+30% synergy
Taniwha
28% of 8527 decks
+28% synergy
Kwain, Itinerant Meddler
27% of 3866 decks
+24% synergy
Kardur, Doomscourge
26% of 2015 decks
+20% synergy
Thought Devourer
25% of 8527 decks
+25% synergy
Octomancer
25% of 12 decks
+19% synergy
Accursed Marauder
25% of 931 decks
+15% synergy
Yukora, the Prisoner
24% of 6411 decks
+24% synergy
The Locust God
24% of 3960 decks
+19% synergy
Djinn of Infinite Deceits
23% of 8526 decks
+23% synergy
Unstoppable Slasher
23% of 290 decks
+16% synergy
Volatile Stormdrake
23% of 1649 decks
+19% synergy
Phyrexian Soulgorger
22% of 10418 decks
+22% synergy
Twenty-Toed Toad
22% of 707 decks
+16% synergy
Gisa, Glorious Resurrector
22% of 6319 decks
+20% synergy
Psychosis Crawler
22% of 10418 decks
+19% synergy
Triskaidekaphile
19% of 8300 decks
+17% synergy
Instants
Counterspell
62% of 8527 decks
+19% synergy
Rakdos Charm
62% of 2059 decks
+47% synergy
Wrong Turn
60% of 8413 decks
+59% synergy
Swords to Plowshares
58% of 3988 decks
-4% synergy
Bedevil
55% of 2058 decks
+40% synergy
Chaos Warp
50% of 5853 decks
+18% synergy
Dark Ritual
45% of 6411 decks
+22% synergy
Get Out
41% of 140 decks
+35% synergy
Negate
40% of 8527 decks
+17% synergy
Don't Make a Sound
35% of 83 decks
+25% synergy
Path to Exile
33% of 3988 decks
-12% synergy
Infernal Grasp
31% of 6319 decks
+23% synergy
Sudden Substitution
29% of 8468 decks
+29% synergy
Arcane Denial
28% of 8527 decks
+9% synergy
Glimmerburst
27% of 60 decks
+18% synergy
Dawn's Truce
25% of 426 decks
+8% synergy
Dovin's Veto
24% of 3928 decks
+5% synergy
An Offer You Can't Refuse
24% of 8168 decks
+3% synergy
Perch Protection
24% of 386 decks
+19% synergy
Reins of Power
23% of 8527 decks
+22% synergy
Growth Spiral
23% of 127 decks
+1% synergy
Aetherize
22% of 8526 decks
+16% synergy
Cyclonic Rift
21% of 8526 decks
-7% synergy
Generous Gift
21% of 3932 decks
-5% synergy
Chef's Kiss
21% of 5637 decks
+20% synergy
Countersquall
17% of 4545 decks
+15% synergy
Fell the Profane
17% of 1154 decks
+5% synergy
Pongify
16% of 8527 decks
+4% synergy
Sink into Stupor
16% of 1559 decks
+2% synergy
Enlightened Tutor
16% of 3988 decks
-2% synergy
Beast Within
15% of 162 decks
-23% synergy
Go for the Throat
15% of 6411 decks
+8% synergy
Brand
15% of 5853 decks
+15% synergy
Filter Out
15% of 5427 decks
+13% synergy
Long River's Pull
15% of 831 decks
+9% synergy
Brainstorm
15% of 8527 decks
-7% synergy
Teferi's Protection
15% of 3970 decks
-6% synergy
Shifting Borders
14% of 8527 decks
+14% synergy
Untimely Malfunction
13% of 333 decks
-4% synergy
Run Away Together
13% of 8460 decks
+12% synergy
Fierce Guardianship
13% of 8449 decks
-5% synergy
Worldly Tutor
13% of 162 decks
-1% synergy
Vampiric Tutor
12% of 6411 decks
-6% synergy
Deadly Rollick
12% of 6406 decks
+2% synergy
Mana Drain
12% of 8527 decks
-3% synergy
Vraska's Fall
12% of 4622 decks
+9% synergy
Waterlogged Teachings
12% of 751 decks
+5% synergy
Not Dead After All
11% of 3056 decks
+8% synergy
Deflecting Swat
11% of 5775 decks
-5% synergy
Offer Immortality
11% of 4622 decks
+10% synergy
Sorceries
Fateful Handoff
63% of 5865 decks
+62% synergy
Approach of the Second Sun
52% of 3973 decks
+48% synergy
Feed the Swarm
52% of 6406 decks
+34% synergy
Cultivate
43% of 162 decks
-4% synergy
Modify Memory
41% of 8082 decks
+40% synergy
Blasphemous Act
27% of 5852 decks
-7% synergy
Farseek
26% of 162 decks
-8% synergy
Fractured Identity
25% of 3961 decks
+23% synergy
Kodama's Reach
25% of 162 decks
-7% synergy
Supreme Verdict
24% of 3978 decks
+10% synergy
Sign in Blood
22% of 6411 decks
+12% synergy
Last One Standing
21% of 2058 decks
+20% synergy
Rampant Growth
20% of 162 decks
-14% synergy
Ringsight
20% of 2725 decks
+15% synergy
Farewell
20% of 3704 decks
+7% synergy
Irenicus's Vile Duplication
18% of 8082 decks
+14% synergy
Toxic Deluge
18% of 6411 decks
+0% synergy
Nature's Lore
17% of 162 decks
-15% synergy
Demonic Tutor
17% of 6411 decks
-5% synergy
Switcheroo
17% of 8526 decks
+16% synergy
Legerdemain
17% of 8527 decks
+16% synergy
Time Wipe
16% of 3928 decks
+9% synergy
Three Visits
16% of 162 decks
-9% synergy
Wear Down
16% of 19 decks
+12% synergy
Tempt with Discovery
15% of 162 decks
+11% synergy
Austere Command
15% of 3988 decks
+2% synergy
Read the Bones
14% of 6411 decks
+6% synergy
Thieves' Auction
14% of 5853 decks
+14% synergy
Disrupt Decorum
14% of 5834 decks
+11% synergy
Bring to Light
14% of 128 decks
+12% synergy
Donate
13% of 8527 decks
+13% synergy
Reanimate
13% of 6411 decks
-3% synergy
Political Trickery
13% of 8527 decks
+13% synergy
Damnation
13% of 6411 decks
+4% synergy
Vandalblast
12% of 5851 decks
-4% synergy
Cultural Exchange
12% of 8527 decks
+12% synergy
Persist
12% of 6347 decks
+9% synergy
Scrambleverse
12% of 5853 decks
+11% synergy
Idyllic Tutor
11% of 3988 decks
+6% synergy
Fell
11% of 593 decks
+8% synergy
Genesis Ultimatum
11% of 120 decks
+5% synergy
Diabolic Tutor
10% of 6411 decks
+4% synergy
Night's Whisper
10% of 6411 decks
+1% synergy
Infectious Inquiry
10% of 4622 decks
+7% synergy
Dreadbore
9% of 2059 decks
+7% synergy
Promise of Loyalty
9% of 3831 decks
+6% synergy
Drown in Ichor
9% of 4622 decks
+6% synergy
Jarad's Orders
8% of 148 decks
+6% synergy
Open the Gates
8% of 161 decks
+7% synergy
Ponder
8% of 8527 decks
-5% synergy
Utility Artifacts
Swiftfoot Boots
50% of 10418 decks
+22% synergy
Lightning Greaves
43% of 10418 decks
+17% synergy
Hithlain Rope
42% of 6041 decks
+42% synergy
Pendant of Prosperity
40% of 10357 decks
+40% synergy
Cursed Recording
36% of 652 decks
+36% synergy
Bucknard's Everfull Purse
31% of 10162 decks
+31% synergy
Immortal Coil
23% of 6411 decks
+23% synergy
Jinxed Idol
22% of 10418 decks
+22% synergy
Wayfarer's Bauble
18% of 10418 decks
+8% synergy
Crown of Doom
18% of 10413 decks
+18% synergy
Crawlspace
17% of 10418 decks
+16% synergy
Contested Game Ball
16% of 3987 decks
+16% synergy
Jinxed Choker
16% of 10418 decks
+16% synergy
Bloodthirsty Blade
16% of 10357 decks
+15% synergy
Mithril Coat
15% of 6222 decks
+9% synergy
Assault Suit
15% of 10413 decks
+14% synergy
Strionic Resonator
14% of 10416 decks
+11% synergy
Howling Mine
13% of 10418 decks
+11% synergy
Whispersilk Cloak
13% of 10418 decks
+9% synergy
Neurok Stealthsuit
11% of 8527 decks
+11% synergy
Wishclaw Talisman
11% of 6408 decks
+6% synergy
Alhammarret's Archive
10% of 10412 decks
+8% synergy
Wedding Ring
10% of 3737 decks
+8% synergy
Geth's Grimoire
8% of 10418 decks
+7% synergy
Venser's Journal
8% of 10418 decks
+7% synergy
Despotic Scepter
8% of 10418 decks
+8% synergy
Brotherhood Regalia
7% of 1441 decks
+2% synergy
Norn's Annex
6% of 3988 decks
+4% synergy
Avarice Totem
6% of 10418 decks
+6% synergy
Aetherflux Reservoir
6% of 10404 decks
+2% synergy
Jinxed Ring
5% of 10418 decks
+5% synergy
Enchantments
Moderation
47% of 3814 decks
+46% synergy
Pyromancer's Swath
44% of 5853 decks
+44% synergy
Greed's Gambit
39% of 1362 decks
+38% synergy
Transcendence
38% of 3988 decks
+38% synergy
Dazzling Theater // Prop Room
37% of 27 decks
+4% synergy
Puca's Mischief
36% of 8527 decks
+35% synergy
Ghoulish Impetus
34% of 3303 decks
+32% synergy
Heartless Summoning
32% of 6411 decks
+31% synergy
Darksteel Mutation
30% of 3987 decks
+24% synergy
Leyline of the Guildpact
29% of 34 decks
+6% synergy
Smothering Tithe
29% of 3941 decks
+4% synergy
Illusions of Grandeur
29% of 8527 decks
+29% synergy
Curse of Verbosity
28% of 8509 decks
+27% synergy
Demonic Pact
28% of 6411 decks
+27% synergy
Exchange of Words
27% of 7668 decks
+27% synergy
Demonic Lore
27% of 6406 decks
+27% synergy
Oblivion Ring
26% of 3988 decks
+25% synergy
Paradox Haze
25% of 8527 decks
+24% synergy
Curse of Opulence
25% of 5834 decks
+21% synergy
Parasitic Impetus
24% of 6406 decks
+23% synergy
Rhystic Study
23% of 8527 decks
-4% synergy
Statecraft
22% of 8527 decks
+22% synergy
Sphere of Safety
22% of 3987 decks
+17% synergy
Forbidden Crypt
22% of 6411 decks
+22% synergy
Solitary Confinement
22% of 3988 decks
+21% synergy
Dissipation Field
20% of 8527 decks
+19% synergy
Midnight Oil
19% of 6411 decks
+19% synergy
Delusions of Mediocrity
19% of 8527 decks
+19% synergy
Form of the Dragon
18% of 5853 decks
+18% synergy
Nefarious Lich
18% of 6411 decks
+18% synergy
Curse of Exhaustion
18% of 3987 decks
+17% synergy
The Trickster-God's Heist
17% of 4537 decks
+16% synergy
Planar Disruption
16% of 2805 decks
+15% synergy
Shadow of the Second Sun
16% of 1649 decks
+15% synergy
Unable to Scream
16% of 241 decks
+12% synergy
Lich's Mastery
16% of 6410 decks
+15% synergy
No Mercy
15% of 6411 decks
+13% synergy
Banishing Light
14% of 3987 decks
+13% synergy
Teferi's Ageless Insight
14% of 8444 decks
+9% synergy
Smoke
14% of 5853 decks
+13% synergy
Colfenor's Plans
14% of 6411 decks
+14% synergy
Phyrexian Arena
13% of 6411 decks
-1% synergy
Wild Research
13% of 3889 decks
+13% synergy
Solemnity
13% of 3972 decks
+12% synergy
Blood Funnel
13% of 6411 decks
+13% synergy
Clout of the Dominus
13% of 3976 decks
+12% synergy
Treacherous Blessing
13% of 6407 decks
+12% synergy
Diplomatic Immunity
13% of 8527 decks
+12% synergy
Waste Not
12% of 6411 decks
+10% synergy
Grasp of Fate
12% of 3982 decks
+9% synergy
Planeswalkers
The Eternal Wanderer
7% of 2970 decks
+4% synergy
Geyadrone Dihada
7% of 190 decks
+5% synergy
Jace, Wielder of Mysteries
7% of 8475 decks
+4% synergy
Venser, the Sojourner
6% of 3979 decks
+5% synergy
Utility Lands
Reliquary Tower
58% of 10418 decks
+29% synergy
Bojuka Bog
49% of 6411 decks
+18% synergy
Rogue's Passage
29% of 10416 decks
+9% synergy
Homeward Path
28% of 10418 decks
+27% synergy
Hall of Heliod's Generosity
28% of 3932 decks
+21% synergy
Maze of Ith
17% of 10418 decks
+14% synergy
Cabal Coffers
14% of 6411 decks
+3% synergy
Urborg, Tomb of Yawgmoth
12% of 10418 decks
+3% synergy
Boseiju, Who Endures
12% of 145 decks
-8% synergy
Kher Keep
11% of 5853 decks
+9% synergy
Otawara, Soaring City
11% of 8219 decks
-6% synergy
Arena of Glory
11% of 1143 decks
+1% synergy
Mystic Sanctuary
10% of 8460 decks
-3% synergy
Restless Reef
9% of 1583 decks
+5% synergy
Temple of the False God
9% of 10418 decks
-0% synergy
Minas Morgul, Dark Fortress
9% of 2860 decks
+7% synergy
Shizo, Death's Storehouse
8% of 6411 decks
+4% synergy
Rix Maadi, Dungeon Palace
8% of 2059 decks
+7% synergy
Restless Vents
8% of 827 decks
+5% synergy
Creeping Tar Pit
8% of 4545 decks
+5% synergy
Takenuma, Abandoned Mire
7% of 6266 decks
-3% synergy
Command Beacon
6% of 10411 decks
+2% synergy
Castle Locthwain
6% of 6408 decks
+1% synergy
Ancient Tomb
6% of 10418 decks
-4% synergy
Mana Artifacts
Sol Ring
89% of 10418 decks
+4% synergy
Arcane Signet
86% of 10349 decks
+14% synergy
Dimir Signet
72% of 4545 decks
+42% synergy
Rakdos Signet
64% of 2059 decks
+34% synergy
Talisman of Dominance
59% of 4545 decks
+27% synergy
Azorius Signet
54% of 3979 decks
+28% synergy
Izzet Signet
53% of 3976 decks
+24% synergy
Boros Signet
49% of 3893 decks
+25% synergy
Thought Vessel
47% of 10411 decks
+30% synergy
Talisman of Indulgence
41% of 2059 decks
+15% synergy
Fellwar Stone
35% of 10418 decks
+14% synergy
Decanter of Endless Water
28% of 9829 decks
+23% synergy
Mind Stone
27% of 10418 decks
+9% synergy
Commander's Sphere
25% of 10413 decks
+10% synergy
Talisman of Creativity
23% of 3920 decks
-6% synergy
Talisman of Conviction
19% of 3837 decks
-3% synergy
Charcoal Diamond
19% of 6411 decks
+13% synergy
Talisman of Progress
19% of 3979 decks
-4% synergy
Jeskai Banner
13% of 3885 decks
+12% synergy
Sky Diamond
12% of 8527 decks
+7% synergy
Coveted Jewel
9% of 10388 decks
+8% synergy
Chromatic Lantern
9% of 10416 decks
-0% synergy
Timeless Lotus
8% of 96 decks
-6% synergy
Staff of Compleation
8% of 7675 decks
+6% synergy
Orzhov Signet
8% of 141 decks
-19% synergy
Raugrin Crystal
7% of 3812 decks
+5% synergy
Misleading Signpost
6% of 4139 decks
+4% synergy
Midnight Clock
6% of 8460 decks
+1% synergy
Relic of Sauron
6% of 104 decks
-6% synergy
Séance Board
6% of 145 decks
+1% synergy
Mana Crypt
5% of 10418 decks
-4% synergy
Fire Diamond
5% of 5853 decks
-0% synergy
Rakdos Locket
5% of 2058 decks
+4% synergy
Talisman of Hierarchy
5% of 139 decks
-19% synergy
Lands
Command Tower
88% of 10418 decks
+14% synergy
Mystic Monastery
72% of 3885 decks
+45% synergy
Sunken Hollow
68% of 4545 decks
+34% synergy
Smoldering Marsh
65% of 2059 decks
+32% synergy
Dragonskull Summit
58% of 2059 decks
+27% synergy
Choked Estuary
55% of 4545 decks
+38% synergy
Drowned Catacomb
54% of 4545 decks
+28% synergy
The World Tree
53% of 109 decks
+20% synergy
Rakdos Carnarium
48% of 2059 decks
+33% synergy
Glacial Fortress
47% of 3979 decks
+21% synergy
Tainted Isle
47% of 4545 decks
+36% synergy
Perilous Landscape
46% of 751 decks
+33% synergy
Shipwreck Marsh
46% of 4530 decks
+27% synergy
Sulfur Falls
46% of 3976 decks
+15% synergy
Temple of Malice
45% of 2059 decks
+31% synergy
Foreboding Ruins
45% of 2059 decks
+29% synergy
Darkwater Catacombs
45% of 4545 decks
+30% synergy
Gloomlake Verge
45% of 258 decks
+25% synergy
Exotic Orchard
44% of 10418 decks
+9% synergy
Raugrin Triome
43% of 3812 decks
+17% synergy
Crumbling Necropolis
43% of 199 decks
+12% synergy
Clifftop Retreat
41% of 3893 decks
+13% synergy
Morphic Pool
41% of 4543 decks
+14% synergy
Temple of Deceit
40% of 4545 decks
+24% synergy
Azorius Chancery
40% of 3979 decks
+25% synergy
Hallowed Fountain
39% of 3979 decks
-2% synergy
Watery Grave
39% of 4545 decks
-2% synergy
Blazemire Verge
39% of 118 decks
+17% synergy
Tainted Peak
39% of 2059 decks
+29% synergy
Izzet Boilerworks
38% of 3976 decks
+22% synergy
Seething Landscape
38% of 29 decks
+22% synergy
Steam Vents
38% of 3976 decks
-2% synergy
Blood Crypt
37% of 2059 decks
-2% synergy
Luxury Suite
36% of 2058 decks
+10% synergy
Training Center
36% of 3865 decks
+9% synergy
Sacred Foundry
36% of 3893 decks
-0% synergy
Boros Garrison
36% of 3893 decks
+21% synergy
Spectator Seating
35% of 3782 decks
+10% synergy
Dimir Aqueduct
34% of 4545 decks
+17% synergy
Prairie Stream
33% of 3974 decks
-0% synergy
Sea of Clouds
31% of 3955 decks
+5% synergy
Evolving Wilds
31% of 10418 decks
+10% synergy
Shadowblood Ridge
29% of 2059 decks
+18% synergy
Underground River
29% of 4545 decks
+9% synergy
Ketria Triome
28% of 120 decks
-4% synergy
Xander's Lounge
28% of 182 decks
+0% synergy
Haunted Ridge
28% of 1973 decks
+12% synergy
Sulfurous Springs
25% of 2059 decks
+5% synergy
Raucous Theater
24% of 724 decks
+11% synergy
Temple of Epiphany
24% of 3975 decks
+6% synergy