Red Mana Battery (Card)

Red Mana Battery
In 292 decks 0.01% of 2989276 decks
DougY
Feb 21, 2020
Too-Specific Top 10 - Big Rocks
Mana rocks? More like mana BOULDERS!
Cardsphere
Archidekt
Commander Spellbook
Moxfield
Scryfall
MTGStocks
Nicol Bolas
0.93% of 1078 decks 10 decks
Godo, Bandit Warlord
0.59% of 1685 decks 10 decks
Bello, Bard of the Brambles
0.06% of 13867 decks 8 decks
Vaevictis Asmadi
2.30% of 305 decks 7 decks
Immard, the Stormcleaver
0.56% of 1065 decks 6 decks
Krenko, Mob Boss
0.02% of 28870 decks 6 decks
Xira Arien
1.20% of 416 decks 5 decks
Inferno of the Star Mounts
0.41% of 1231 decks 5 decks
Daretti, Scrap Savant
0.17% of 2930 decks 5 decks
Ovika, Enigma Goliath
0.07% of 6834 decks 5 decks
Omnath, Locus of All
0.04% of 13465 decks 5 decks
Palladia-Mors
2.31% of 173 decks 4 decks
Jhoira, Ageless Innovator
0.18% of 2175 decks 4 decks
Zo-Zu the Punisher
0.17% of 2321 decks 4 decks
Cayth, Famed Mechanist
0.15% of 2684 decks 4 decks
Zevlor, Elturel Exile
0.10% of 3986 decks 4 decks
Imodane, the Pyrohammer
0.05% of 8054 decks 4 decks
Ramos, Dragon Engine
0.04% of 9700 decks 4 decks
Tetsuo Umezawa
2.73% of 110 decks 3 decks
Kurkesh, Onakke Ancient
0.66% of 458 decks 3 decks
New Cards
Ancient Adamantoise
33% of 3 decks +33% synergy
Cornered by Black Mages
25% of 4 decks +24% synergy
Overkill
20% of 5 decks +19% synergy
Black Waltz No. 3
20% of 5 decks +18% synergy
Mistrise Village
9% of 23 decks +1% synergy
High Synergy Cards
Greed
24% of 102 decks +22% synergy
Terror
20% of 102 decks +19% synergy
Flux Channeler
22% of 101 decks +19% synergy
Fog
22% of 82 decks +19% synergy
Fireball
19% of 292 decks +18% synergy
Untamed Wilds
18% of 82 decks +18% synergy
Atraxa, Praetors' Voice
21% of 24 decks +17% synergy
Calciform Pools
17% of 41 decks +17% synergy
Bottomless Vault
17% of 102 decks +17% synergy
Filigree Vector
17% of 75 decks +17% synergy
Top Cards
Counterspell
33% of 101 decks -9% synergy
Birds of Paradise
29% of 82 decks +2% synergy
Llanowar Elves
28% of 82 decks +7% synergy
Swords to Plowshares
25% of 75 decks -37% synergy
Dark Ritual
25% of 102 decks +2% synergy
Lightning Bolt
24% of 292 decks +13% synergy
Animate Dead
20% of 102 decks +10% synergy
Commander's Sphere
20% of 292 decks +5% synergy
Cultivate
20% of 82 decks -25% synergy
Mind Stone
19% of 292 decks +3% synergy
Game Changers
Demonic Tutor
21% of 102 decks -0% synergy
Rhystic Study
13% of 101 decks -13% synergy
Enlightened Tutor
12% of 75 decks -5% synergy
Mana Vault
11% of 292 decks +5% synergy
Jeska's Will
10% of 292 decks -7% synergy
Gamble
8% of 292 decks -2% synergy
Worldly Tutor
6% of 82 decks -7% synergy
Mystical Tutor
6% of 101 decks -8% synergy
Fierce Guardianship
6% of 101 decks -12% synergy
Deflecting Swat
5% of 292 decks -11% synergy
Creatures
Tekuthal, Inquiry Dominus
17% of 101 decks +15% synergy
Dreamtide Whale
16% of 68 decks +14% synergy
Sengir Vampire
16% of 102 decks +16% synergy
Vaevictis Asmadi
15% of 47 decks +15% synergy
Royal Assassin
15% of 102 decks +13% synergy
Metastatic Evangel
14% of 49 decks +12% synergy
Fyndhorn Elves
13% of 82 decks +2% synergy
Ramos, Dragon Engine
12% of 24 decks +5% synergy
Sol'kanar the Swamp King
12% of 58 decks +12% synergy
Thrummingbird
12% of 101 decks +9% synergy
Vedalken Infuser
12% of 101 decks +12% synergy
Johan
11% of 36 decks +11% synergy
Ezuri, Stalker of Spheres
11% of 27 decks +8% synergy
Vorel of the Hull Clade
11% of 27 decks +8% synergy
Evolution Sage
11% of 82 decks +5% synergy
Deepglow Skate
11% of 101 decks +9% synergy
Clone
11% of 101 decks +10% synergy
Gwendlyn Di Corci
10% of 58 decks +10% synergy
Nicol Bolas
10% of 58 decks +10% synergy
Hell's Caretaker
10% of 102 decks +10% synergy
Hypnotic Specter
10% of 102 decks +9% synergy
Cayth, Famed Mechanist
9% of 32 decks +6% synergy
Coretapper
9% of 292 decks +9% synergy
Etherium Sculptor
9% of 101 decks +4% synergy
Shivan Dragon
9% of 292 decks +9% synergy
Tetsuo Umezawa
9% of 58 decks +9% synergy
Solemn Simulacrum
9% of 292 decks -5% synergy
Iron Myr
9% of 292 decks +6% synergy
Ley Druid
9% of 82 decks +9% synergy
Goblin Anarchomancer
9% of 82 decks -5% synergy
Xira Arien
9% of 47 decks +8% synergy
Jacques le Vert
8% of 36 decks +8% synergy
Mysidian Elder
8% of 12 decks +7% synergy
Faeburrow Elder
8% of 36 decks -3% synergy
Rith's Attendant
8% of 36 decks +8% synergy
Wandertale Mentor
8% of 49 decks +6% synergy
Grateful Apparition
8% of 75 decks +6% synergy
Vesuvan Doppelganger
8% of 101 decks +8% synergy
Agent Frank Horrigan
8% of 38 decks +6% synergy
Boris Devilboon
8% of 102 decks +8% synergy
Sorceress Queen
8% of 102 decks +8% synergy
Will-o'-the-Wisp
8% of 102 decks +8% synergy
Skirk Prospector
8% of 292 decks +5% synergy
Foundry Inspector
8% of 292 decks +4% synergy
Sisters of the Flame
8% of 292 decks +8% synergy
Sunastian Falconer
7% of 82 decks +7% synergy
Elvish Mystic
7% of 82 decks -10% synergy
Mahamoti Djinn
7% of 101 decks +7% synergy
Apprentice Wizard
7% of 101 decks +7% synergy
Princess Lucrezia
7% of 58 decks +7% synergy
Instants
Mana Drain
19% of 101 decks +4% synergy
Boros Charm
16% of 75 decks -8% synergy
Experimental Augury
16% of 101 decks +14% synergy
Red Elemental Blast
16% of 292 decks +10% synergy
Chaos Warp
15% of 292 decks -16% synergy
Seething Song
14% of 292 decks +8% synergy
Darkness
14% of 102 decks +12% synergy
Crumble
13% of 82 decks +13% synergy
Path to Exile
13% of 75 decks -34% synergy
Abrade
12% of 292 decks +1% synergy
Disenchant
12% of 75 decks +9% synergy
Negate
10% of 101 decks -12% synergy
Brainstorm
10% of 101 decks -9% synergy
Howl from Beyond
10% of 102 decks +10% synergy
Ripples of Potential
10% of 83 decks +7% synergy
Remove Soul
9% of 101 decks +9% synergy
Power Sink
9% of 101 decks +9% synergy
Unsummon
9% of 101 decks +8% synergy
Giant Growth
9% of 82 decks +8% synergy
Beast Within
9% of 82 decks -28% synergy
Transpose
8% of 12 decks +7% synergy
Desperate Ritual
8% of 292 decks +5% synergy
Shatter
8% of 292 decks +7% synergy
Avoid Fate
7% of 82 decks +7% synergy
Steady Progress
7% of 101 decks +6% synergy
Serum Snare
7% of 101 decks +6% synergy
Fuel for the Cause
7% of 101 decks +6% synergy
Radstorm
7% of 87 decks +6% synergy
Big Score
7% of 292 decks -2% synergy
Thrill of Possibility
7% of 292 decks -3% synergy
Generous Gift
7% of 75 decks -18% synergy
Pyroblast
7% of 292 decks +1% synergy
Unexpected Windfall
7% of 292 decks +0% synergy
Fork
7% of 292 decks +6% synergy
Inferno
7% of 292 decks +6% synergy
Assassin's Trophy
6% of 47 decks -24% synergy
Legion Leadership
6% of 49 decks +1% synergy
Heroic Intervention
6% of 82 decks -24% synergy
Boomerang
6% of 101 decks +6% synergy
Pongify
6% of 101 decks -6% synergy
Mana Short
6% of 101 decks +6% synergy
Fissure
6% of 292 decks +6% synergy
Shock
5% of 292 decks +4% synergy
Pyretic Ritual
5% of 292 decks +3% synergy
Wear // Tear
5% of 75 decks -2% synergy
Deflecting Palm
5% of 75 decks +0% synergy
Teferi's Protection
5% of 75 decks -13% synergy
Dispatch
5% of 75 decks +1% synergy
Flawless Maneuver
5% of 75 decks -5% synergy
Morale
5% of 75 decks +5% synergy
Sorceries
Blasphemous Act
17% of 292 decks -16% synergy
Mana Geyser
15% of 292 decks +8% synergy
Rampant Growth
15% of 82 decks -20% synergy
Tezzeret's Gambit
14% of 101 decks +11% synergy
Contentious Plan
14% of 101 decks +12% synergy
Ashes to Ashes
14% of 102 decks +14% synergy
Nature's Lore
13% of 82 decks -18% synergy
Kodama's Reach
12% of 82 decks -18% synergy
Farseek
11% of 82 decks -24% synergy
Desert Twister
11% of 82 decks +11% synergy
Braingeyser
11% of 101 decks +11% synergy
Recall
11% of 101 decks +11% synergy
Vandalblast
11% of 292 decks -5% synergy
Faithless Looting
11% of 292 decks -6% synergy
Mind Twist
10% of 102 decks +10% synergy
Regrowth
10% of 82 decks +7% synergy
Earthquake
10% of 292 decks +8% synergy
Disintegrate
9% of 292 decks +9% synergy
Timetwister
9% of 101 decks +8% synergy
Three Visits
9% of 82 decks -16% synergy
Circle of Power
8% of 12 decks +7% synergy
Austere Command
8% of 75 decks -5% synergy
Wrath of God
8% of 75 decks +2% synergy
Drain Life
8% of 102 decks +8% synergy
Supreme Verdict
7% of 41 decks -6% synergy
Vivisurgeon's Insight
7% of 101 decks +6% synergy
Transmute Artifact
7% of 101 decks +6% synergy
Fabricate
7% of 101 decks +1% synergy
Chain Lightning
7% of 292 decks +6% synergy
Wheel of Fortune
6% of 292 decks +1% synergy
Winds of Change
6% of 292 decks +5% synergy
Hurricane
6% of 82 decks +6% synergy
Stream of Life
6% of 82 decks +6% synergy
Decimate
6% of 82 decks -2% synergy
Tranquility
6% of 82 decks +6% synergy
Harmonize
6% of 82 decks -2% synergy
Diabolic Tutor
6% of 102 decks -0% synergy
Irencrag Feat
5% of 292 decks +5% synergy
Brass's Bounty
5% of 292 decks +3% synergy
Rite of Flame
5% of 292 decks +2% synergy
Idyllic Tutor
5% of 75 decks +1% synergy
Bridgeworks Battle
5% of 57 decks +1% synergy
Cruel Ultimatum
5% of 58 decks +2% synergy
Dismantle
5% of 292 decks +5% synergy
Utility Artifacts
Swiftfoot Boots
13% of 292 decks -14% synergy
Door to Nothingness
12% of 24 decks +9% synergy
Ruby Medallion
12% of 292 decks +9% synergy
Bootleggers' Stash
12% of 82 decks +10% synergy
Howling Mine
12% of 292 decks +10% synergy
Heart of Ramos
11% of 292 decks +11% synergy
Glittering Stockpile
10% of 292 decks +8% synergy
Hedron Archive
10% of 292 decks +7% synergy
Mace of the Valiant
9% of 75 decks +9% synergy
Energy Chamber
9% of 292 decks +9% synergy
Nevinyrral's Disk
9% of 292 decks +7% synergy
Lightning Greaves
9% of 292 decks -16% synergy
Contagion Engine
9% of 292 decks +8% synergy
Contagion Clasp
8% of 292 decks +7% synergy
Lux Cannon
8% of 292 decks +7% synergy
Wayfarer's Bauble
8% of 292 decks -2% synergy
Helm of the Host
8% of 292 decks +4% synergy
Darksteel Reactor
7% of 292 decks +7% synergy
Power Conduit
7% of 292 decks +7% synergy
Black Mage's Rod
7% of 14 decks +6% synergy
Izzet Cluestone
7% of 101 decks +6% synergy
Mindsplice Apparatus
7% of 101 decks +5% synergy
Magistrate's Scepter
7% of 292 decks +7% synergy
Jayemdae Tome
7% of 292 decks +6% synergy
Surge Node
6% of 292 decks +6% synergy
Lavabrink Floodgates
6% of 292 decks +6% synergy
Vulshok Factory
6% of 292 decks +6% synergy
Titan Forge
6% of 292 decks +6% synergy
Golem Foundry
5% of 292 decks +5% synergy
Dragonspark Reactor
5% of 292 decks +5% synergy
Hammer of Nazahn
5% of 292 decks +4% synergy
Clearwater Goblet
5% of 292 decks +5% synergy
Gavel of the Righteous
5% of 292 decks +5% synergy
Wedding Ring
5% of 75 decks +4% synergy
Eternity Vessel
5% of 292 decks +5% synergy
Kyren Toy
5% of 292 decks +5% synergy
Unstable Obelisk
5% of 292 decks +5% synergy
Ankh of Mishra
5% of 292 decks +5% synergy
Enchantments
Inexorable Tide
19% of 101 decks +16% synergy
Wild Growth
18% of 82 decks +8% synergy
Sylvan Library
17% of 82 decks +7% synergy
Mana Flare
16% of 292 decks +15% synergy
Leyline of the Guildpact
15% of 20 decks -0% synergy
Land Tax
12% of 75 decks +5% synergy
Black Market
12% of 102 decks +7% synergy
Blood Moon
11% of 292 decks +8% synergy
Garruk's Uprising
11% of 82 decks -6% synergy
Control Magic
11% of 101 decks +10% synergy
Manabarbs
10% of 292 decks +8% synergy
Oubliette
10% of 102 decks +9% synergy
Pestilence
10% of 102 decks +9% synergy
Mana Bloom
10% of 82 decks +10% synergy
Smothering Tithe
9% of 75 decks -14% synergy
Steal Artifact
9% of 101 decks +9% synergy
Doubling Season
9% of 82 decks -1% synergy
Copy Artifact
8% of 101 decks +7% synergy
Demonic Torment
8% of 102 decks +8% synergy
Rhythm of the Wild
7% of 82 decks -16% synergy
Furnace of Rath
7% of 292 decks +6% synergy
Gratuitous Violence
7% of 292 decks +5% synergy
Assemble the Legion
7% of 75 decks +3% synergy
Resourceful Defense
7% of 75 decks +6% synergy
City on Fire
7% of 292 decks +3% synergy
Fiery Emancipation
7% of 292 decks +3% synergy
Braid of Fire
7% of 292 decks +6% synergy
Impact Tremors
6% of 292 decks -4% synergy
Vessel of Volatility
6% of 292 decks +6% synergy
Smoke
6% of 292 decks +6% synergy
Mana Reflection
6% of 82 decks +4% synergy
Abundance
6% of 82 decks +4% synergy
Unnatural Growth
6% of 82 decks +0% synergy
Powerleech
6% of 82 decks +6% synergy
Power Artifact
6% of 101 decks +6% synergy
Stasis
6% of 101 decks +6% synergy
Firemind's Research
6% of 101 decks +6% synergy
Omniscience
6% of 101 decks +3% synergy
Dictate of the Twin Gods
6% of 292 decks +4% synergy
Virtue of Strength
5% of 73 decks +3% synergy
Warstorm Surge
5% of 292 decks +1% synergy
Spirit Link
5% of 75 decks +4% synergy
Anointed Procession
5% of 75 decks -3% synergy
Giant Strength
5% of 292 decks +5% synergy
Goblin War Drums
5% of 292 decks +4% synergy
Warleader's Call
5% of 60 decks -3% synergy
Planeswalkers
Elspeth, Storm Slayer
6% of 18 decks +0% synergy
Ajani Steadfast
5% of 75 decks +5% synergy
Utility Lands
Hollow Trees
15% of 82 decks +15% synergy
Dwarven Hold
14% of 292 decks +14% synergy
Sand Silos
13% of 101 decks +13% synergy
Reliquary Tower
12% of 292 decks -18% synergy
Pendelhaven
11% of 82 decks +11% synergy
Karn's Bastion
11% of 292 decks +6% synergy
Fountain of Cho
11% of 75 decks +11% synergy
Dwarven Ruins
10% of 292 decks +10% synergy
Urza's Tower
10% of 292 decks +8% synergy
Urza's Power Plant
10% of 292 decks +8% synergy
Urza's Mine
10% of 292 decks +8% synergy
Seat of the Synod
10% of 101 decks +4% synergy
Subterranean Hangar
10% of 102 decks +10% synergy
Ebon Stronghold
10% of 102 decks +10% synergy
Kessig Wolf Run
10% of 82 decks -6% synergy
Rogue's Passage
9% of 292 decks -11% synergy
Sandstone Needle
9% of 292 decks +8% synergy
Buried Ruin
9% of 292 decks +4% synergy
Rushwood Grove
9% of 82 decks +8% synergy
Havenwood Battleground
9% of 82 decks +8% synergy
Fungal Reaches
9% of 82 decks +8% synergy
Saltcrusted Steppe
8% of 36 decks +8% synergy
Castle Ardenvale
8% of 75 decks +3% synergy
Icatian Store
8% of 75 decks +8% synergy
Urborg
8% of 102 decks +8% synergy
Mercadian Bazaar
7% of 292 decks +7% synergy
Molten Slagheap
7% of 102 decks +6% synergy
Strip Mine
7% of 292 decks +4% synergy
Great Furnace
7% of 292 decks +1% synergy
Valakut, the Molten Pinnacle
7% of 292 decks +4% synergy
Hammerheim
6% of 292 decks +6% synergy
Temple of the False God
6% of 292 decks -3% synergy
Maze of Ith
6% of 292 decks +3% synergy
Forgotten Cave
6% of 292 decks +2% synergy
Mishra's Factory
6% of 292 decks +5% synergy
Mosswort Bridge
6% of 82 decks -4% synergy
Academy Ruins
6% of 101 decks +1% synergy
Saprazzan Cove
6% of 101 decks +6% synergy
Cabal Coffers
6% of 102 decks -4% synergy
Mage-Ring Network
6% of 292 decks +5% synergy
Castle Embereth
5% of 292 decks +2% synergy
Secluded Steppe
5% of 75 decks +2% synergy
Remote Farm
5% of 75 decks +5% synergy
Windbrisk Heights
5% of 75 decks +1% synergy
Dreadship Reef
5% of 58 decks +4% synergy
Mana Artifacts
Blue Mana Battery
83% of 101 decks +83% synergy
White Mana Battery
77% of 75 decks +77% synergy
Green Mana Battery
76% of 82 decks +76% synergy
Black Mana Battery
75% of 102 decks +75% synergy
Sol Ring
64% of 292 decks -20% synergy
Arcane Signet
36% of 292 decks -36% synergy
Fire Diamond
24% of 292 decks +19% synergy
Boros Signet
23% of 75 decks +1% synergy
Fellwar Stone
23% of 292 decks +2% synergy
Everflowing Chalice
21% of 292 decks +16% synergy
Izzet Signet
15% of 101 decks -12% synergy
Basalt Monolith
14% of 292 decks +12% synergy
Thran Dynamo
14% of 292 decks +9% synergy
Moss Diamond
13% of 82 decks +12% synergy
Sky Diamond
13% of 101 decks +8% synergy
Charcoal Diamond
13% of 102 decks +8% synergy
Timeless Lotus
12% of 24 decks +1% synergy
Gruul Signet
12% of 82 decks +1% synergy
Azorius Signet
12% of 41 decks -12% synergy
Marble Diamond
12% of 75 decks +8% synergy
Talisman of Conviction
12% of 75 decks -12% synergy
Thought Vessel
11% of 292 decks -6% synergy
Gilded Lotus
11% of 292 decks +8% synergy
Empowered Autogenerator
11% of 292 decks +11% synergy
Astral Cornucopia
11% of 292 decks +10% synergy
Gemstone Array
10% of 292 decks +10% synergy
Cursed Mirror
10% of 292 decks +4% synergy
Sisay's Ring
10% of 292 decks +9% synergy
Talisman of Creativity
9% of 101 decks -20% synergy
Coalition Relic
9% of 292 decks +8% synergy
Worn Powerstone
8% of 292 decks +6% synergy
Midnight Clock
8% of 101 decks +3% synergy
Pyromancer's Goggles
8% of 292 decks +7% synergy
Rakdos Signet
8% of 102 decks -21% synergy
Izzet Keyrune
7% of 101 decks +7% synergy
Talisman of Indulgence
7% of 102 decks -20% synergy
Caged Sun
7% of 292 decks +5% synergy
Manalith
6% of 292 decks +6% synergy
Ur-Golem's Eye
5% of 292 decks +5% synergy
Foriysian Totem
5% of 292 decks +5% synergy
Firemind Vessel
5% of 292 decks +5% synergy
Prismatic Lens
5% of 292 decks +4% synergy
Lands
Command Tower
30% of 292 decks -44% synergy
The World Tree
29% of 24 decks -2% synergy
Underground Sea
28% of 58 decks +13% synergy
Badlands
23% of 102 decks +9% synergy
Vivid Meadow
20% of 75 decks +19% synergy
Raugrin Triome
20% of 41 decks -6% synergy
Taiga
20% of 82 decks +7% synergy
Karplusan Forest
18% of 82 decks +0% synergy
Clifftop Retreat
17% of 75 decks -14% synergy
Volcanic Island
17% of 101 decks +3% synergy
Vivid Creek
17% of 101 decks +16% synergy
Rootbound Crag
16% of 82 decks -10% synergy
Cinder Glade
16% of 82 decks -23% synergy
Plateau
15% of 75 decks +3% synergy
Sacred Foundry
15% of 75 decks -20% synergy
Hallowed Fountain
15% of 41 decks -25% synergy
Mystic Monastery
15% of 41 decks -13% synergy
Vec Townships
14% of 36 decks +14% synergy
Savannah
14% of 36 decks +1% synergy
Selesnya Guildgate
14% of 36 decks +9% synergy
Steam Vents
14% of 101 decks -24% synergy
Gruul Guildgate
13% of 82 decks +9% synergy
Stomping Ground
13% of 82 decks -27% synergy
Perilous Landscape
13% of 31 decks +5% synergy
Orzhov Guildgate
13% of 31 decks +8% synergy
Sulfur Falls
13% of 101 decks -20% synergy
Sulfurous Springs
13% of 102 decks -9% synergy
Game Trail
12% of 82 decks -4% synergy
Tundra
12% of 41 decks -2% synergy
Spectator Seating
12% of 75 decks -12% synergy
Temple of Triumph
12% of 75 decks -5% synergy
Boros Guildgate
12% of 75 decks +7% synergy
Temple of Epiphany
12% of 101 decks -6% synergy
Dreamroot Cascade
11% of 27 decks -9% synergy
Simic Guildgate
11% of 27 decks +5% synergy
Ketria Triome
11% of 27 decks -21% synergy
Rockfall Vale
11% of 82 decks -11% synergy
Temple of Abandon
11% of 82 decks -3% synergy
Myriad Landscape
11% of 292 decks -7% synergy
Training Center
11% of 101 decks -16% synergy
Shivan Reef
11% of 101 decks -17% synergy
Izzet Boilerworks
11% of 101 decks -5% synergy
Rugged Prairie
11% of 75 decks -1% synergy
Boros Garrison
11% of 75 decks -3% synergy
Needleverge Pathway
11% of 75 decks +2% synergy
Bayou
11% of 47 decks -3% synergy
Koskun Keep
11% of 47 decks +11% synergy
Morphic Pool
10% of 58 decks -15% synergy
Dimir Guildgate
10% of 58 decks +6% synergy
Xander's Lounge
10% of 58 decks -15% synergy