Rampant Rejuvenator (Card)
Rampant Rejuvenator
In 31553 decks
1.11% of 2849688 decks
Apr 9, 2025
Jank No More - The Legendary Power of Vanilla
Who says vanilla has to be plain? Steve debuts with a Varolz deck that utilizes some big bads for flavorful wins!
Mar 20, 2023
How They Brew It - Be Yourself, Volrath
Volrath, the Shapeshifter becomes anyone and everyone in the latest instalment of How They Brew It from Michael Celani.
Tidus, Yuna's Guardian
12.52% of 1677 decks
210 decks
Top Commanders
Henzie "Toolbox" Torre
52.39% of 16300 decks
8540 decks
Chishiro, the Shattered Blade
51.05% of 7063 decks
3606 decks
Gargos, Vicious Watcher
44.81% of 6403 decks
2869 decks
Polukranos Reborn
54.37% of 2244 decks
1220 decks
Zaxara, the Exemplary
5.24% of 14320 decks
750 decks
Phylath, World Sculptor
38.51% of 1937 decks
746 decks
Kirri, Talented Sprout
48.08% of 1196 decks
575 decks
Brenard, Ginger Sculptor
5.28% of 9702 decks
512 decks
Bristly Bill, Spine Sower
11.51% of 4389 decks
505 decks
Halana and Alena, Partners
14.53% of 3282 decks
477 decks
Helga, Skittish Seer
4.26% of 9209 decks
392 decks
Vorinclex, Monstrous Raider
8.63% of 4204 decks
363 decks
Nethroi, Apex of Death
5.49% of 6282 decks
345 decks
Sovereign Okinec Ahau
6.72% of 4701 decks
316 decks
Minsc & Boo, Timeless Heroes
4.05% of 7375 decks
299 decks
Saheeli, Radiant Creator
5.50% of 4767 decks
262 decks
Shalai and Hallar
2.52% of 9675 decks
244 decks
Kudo, King Among Bears
4.04% of 5994 decks
242 decks
Animar, Soul of Elements
1.18% of 18460 decks
218 decks
New Cards
Yuna, Grand Summoner
43% of 470 decks
+41% synergy
Rikku, Resourceful Guardian
37% of 745 decks
+37% synergy
Lulu, Stern Guardian
36% of 745 decks
+35% synergy
Kimahri, Valiant Guardian
35% of 745 decks
+35% synergy
Wakka, Devoted Guardian
34% of 798 decks
+33% synergy
High Synergy Cards
Chainer, Nightmare Adept
61% of 9528 decks
+56% synergy
Junji, the Midnight Sky
54% of 13445 decks
+51% synergy
Ignoble Hierarch
76% of 9528 decks
+51% synergy
Riveteers Ascendancy
51% of 9528 decks
+47% synergy
Ravenous Chupacabra
47% of 13445 decks
+43% synergy
Ziatora, the Incinerator
47% of 9528 decks
+41% synergy
Disciple of Bolas
40% of 13445 decks
+37% synergy
Bringer of the Last Gift
38% of 11737 decks
+37% synergy
Noxious Gearhulk
39% of 13445 decks
+36% synergy
Archpriest of Shadows
36% of 13445 decks
+34% synergy
Top Cards
Swords to Plowshares
55% of 6830 decks
-7% synergy
Beast Within
48% of 31554 decks
+12% synergy
Path to Exile
46% of 6830 decks
-1% synergy
Rampant Growth
45% of 31554 decks
+11% synergy
Chaos Warp
44% of 17557 decks
+13% synergy
Victimize
43% of 13445 decks
+31% synergy
Kodama's Reach
42% of 31554 decks
+12% synergy
Cultivate
41% of 31554 decks
-4% synergy
Blasphemous Act
40% of 17557 decks
+7% synergy
Garruk's Uprising
39% of 31554 decks
+23% synergy
Game Changers
Teferi's Protection
12% of 6830 decks
-7% synergy
Cyclonic Rift
11% of 5547 decks
-14% synergy
Rhystic Study
11% of 5547 decks
-15% synergy
Deflecting Swat
10% of 17557 decks
-6% synergy
Demonic Tutor
10% of 13445 decks
-11% synergy
Aura Shards
9% of 6830 decks
+1% synergy
Worldly Tutor
8% of 31554 decks
-5% synergy
Vampiric Tutor
7% of 13445 decks
-9% synergy
Enlightened Tutor
6% of 6830 decks
-10% synergy
Fierce Guardianship
6% of 5547 decks
-13% synergy
Creatures
Etali, Primal Storm
37% of 17557 decks
+29% synergy
Sakura-Tribe Elder
36% of 31554 decks
+19% synergy
Hydroid Krasis
35% of 5547 decks
+31% synergy
O'aka, Traveling Merchant
34% of 766 decks
+33% synergy
Phyrexian Delver
33% of 13445 decks
+32% synergy
Sin, Unending Cataclysm
33% of 745 decks
+32% synergy
Shelinda, Yevon Acolyte
32% of 798 decks
+31% synergy
Elves of Deep Shadow
32% of 13445 decks
+23% synergy
Auron, Venerated Guardian
32% of 798 decks
+32% synergy
Kethek, Crucible Goliath
32% of 9528 decks
+31% synergy
Chocobo Knights
32% of 815 decks
+31% synergy
Gatta and Luzzu
31% of 815 decks
+30% synergy
Archon of Cruelty
30% of 13445 decks
+27% synergy
Summon: Yojimbo
30% of 798 decks
+28% synergy
Solemn Simulacrum
30% of 31554 decks
+16% synergy
Summon: Valefor
29% of 745 decks
+28% synergy
Mikaeus, the Unhallowed
29% of 13445 decks
+26% synergy
Kardur, Doomscourge
29% of 9528 decks
+22% synergy
Etali, Primal Conqueror
29% of 17557 decks
+19% synergy
Ancient Brass Dragon
29% of 13445 decks
+26% synergy
Managorger Hydra
28% of 31554 decks
+25% synergy
Forgotten Ancient
28% of 31554 decks
+22% synergy
Birds of Paradise
28% of 31554 decks
+1% synergy
Kalonian Hydra
27% of 31554 decks
+24% synergy
Summon: Ixion
27% of 815 decks
+26% synergy
Genesis Hydra
27% of 31554 decks
+26% synergy
Atsushi, the Blazing Sky
26% of 17557 decks
+24% synergy
Kutzil, Malamet Exemplar
25% of 5999 decks
+10% synergy
Llanowar Elves
25% of 31554 decks
+4% synergy
Kami of Whispered Hopes
25% of 31554 decks
+18% synergy
Honest Rutstein
24% of 9534 decks
+19% synergy
Massacre Wurm
24% of 13445 decks
+19% synergy
Champion of Lambholt
24% of 31554 decks
+18% synergy
Herald of Secret Streams
24% of 5547 decks
+21% synergy
Roxanne, Starfall Savant
24% of 12406 decks
+22% synergy
Kokusho, the Evening Star
24% of 13445 decks
+22% synergy
Grumgully, the Generous
23% of 17557 decks
+21% synergy
Ilharg, the Raze-Boar
23% of 17557 decks
+22% synergy
The Goose Mother
22% of 5289 decks
+20% synergy
Primeval Herald
22% of 31554 decks
+22% synergy
Akki Battle Squad
22% of 17557 decks
+21% synergy
Phytohydra
22% of 6830 decks
+22% synergy
Seedguide Ash
22% of 31554 decks
+21% synergy
Winged Hive Tyrant
21% of 1336 decks
+20% synergy
Braids, Arisen Nightmare
21% of 13445 decks
+15% synergy
Fathom Mage
21% of 5547 decks
+17% synergy
Rishkar, Peema Renegade
21% of 31554 decks
+16% synergy
Yuma, Proud Protector
20% of 1333 decks
+20% synergy
Primaris Eliminator
20% of 13445 decks
+20% synergy
Krenko, Tin Street Kingpin
20% of 17557 decks
+16% synergy
Instants
Assassin's Trophy
37% of 13445 decks
+6% synergy
Protection Magic
33% of 815 decks
+32% synergy
Malakir Rebirth
31% of 13445 decks
+23% synergy
Inspiring Call
30% of 31554 decks
+22% synergy
Counterspell
29% of 5547 decks
-13% synergy
Generous Gift
28% of 6830 decks
+4% synergy
Terminate
25% of 9528 decks
+5% synergy
Heroic Intervention
25% of 31554 decks
-5% synergy
Return of the Wildspeaker
19% of 31554 decks
+6% synergy
Silkguard
17% of 31554 decks
+15% synergy
Growth Spiral
16% of 5547 decks
-5% synergy
Electrosiphon
16% of 1047 decks
+14% synergy
Anguished Unmaking
15% of 1621 decks
-9% synergy
An Offer You Can't Refuse
15% of 5547 decks
-7% synergy
Repulsive Mutation
15% of 4484 decks
+12% synergy
Arcane Denial
15% of 5547 decks
-6% synergy
Hunter's Insight
13% of 31554 decks
+10% synergy
Boros Charm
13% of 1701 decks
-11% synergy
Negate
13% of 5547 decks
-9% synergy
Riveteers Charm
12% of 9528 decks
+9% synergy
Deadly Rollick
12% of 13445 decks
+0% synergy
Abzan Charm
12% of 1621 decks
+7% synergy
Mutational Advantage
12% of 4300 decks
+8% synergy
Rushed Rebirth
12% of 13445 decks
+10% synergy
Village Rites
11% of 13445 decks
+1% synergy
Entish Restoration
11% of 31554 decks
+4% synergy
Mythos of Nethroi
11% of 1621 decks
+9% synergy
Unbreakable Formation
10% of 6830 decks
+4% synergy
Starstorm
10% of 17557 decks
+9% synergy
Stroke of Midnight
10% of 6467 decks
-1% synergy
Snakeskin Veil
9% of 31554 decks
+5% synergy
Endless Detour
9% of 2071 decks
+8% synergy
Akroma's Will
9% of 6830 decks
-0% synergy
Abrupt Decay
9% of 13445 decks
-1% synergy
Sundering Growth
9% of 6830 decks
+5% synergy
Yuna's Whistle
9% of 2691 decks
+8% synergy
Harrow
8% of 31554 decks
-1% synergy
Tamiyo's Safekeeping
8% of 31554 decks
+2% synergy
Ripples of Potential
8% of 4858 decks
+6% synergy
Fell the Profane
8% of 8710 decks
-0% synergy
Cosmic Rebirth
8% of 6830 decks
+6% synergy
Invigorating Surge
8% of 31554 decks
+7% synergy
Pull from Tomorrow
8% of 5547 decks
+5% synergy
Revitalizing Repast
8% of 8710 decks
-1% synergy
Saw in Half
8% of 13445 decks
+5% synergy
Gaea's Gift
8% of 31554 decks
+5% synergy
Flawless Maneuver
8% of 6830 decks
-2% synergy
Naya Charm
8% of 1701 decks
+1% synergy
Rootborn Defenses
8% of 6830 decks
+5% synergy
Kazuul's Fury
8% of 17557 decks
+5% synergy
Sorceries
Living Death
39% of 13445 decks
+33% synergy
Nature's Lore
34% of 31554 decks
+2% synergy
Farseek
29% of 31554 decks
-5% synergy
Rishkar's Expertise
25% of 31554 decks
+15% synergy
Villainous Wealth
24% of 2137 decks
+16% synergy
Reanimate
24% of 13445 decks
+7% synergy
Three Visits
23% of 31554 decks
-1% synergy
Decimate
22% of 17557 decks
+14% synergy
Eerie Ultimatum
20% of 1621 decks
+8% synergy
Damning Verdict
16% of 6830 decks
+14% synergy
Austere Command
15% of 6830 decks
+3% synergy
Shamanic Revelation
15% of 31554 decks
+7% synergy
Chain Reaction
15% of 17557 decks
+11% synergy
Wave Goodbye
15% of 4858 decks
+13% synergy
Life's Legacy
14% of 31554 decks
+12% synergy
Incarnation Technique
14% of 13445 decks
+13% synergy
Ruinous Ultimatum
13% of 376 decks
-5% synergy
Rise of the Witch-king
13% of 13431 decks
+8% synergy
Culling Ritual
13% of 13445 decks
+2% synergy
Skyshroud Claim
12% of 31554 decks
+3% synergy
Farewell
12% of 6830 decks
-1% synergy
Toxic Deluge
12% of 13445 decks
-6% synergy
Overwhelming Stampede
10% of 31554 decks
+5% synergy
Curse of the Swine
10% of 5547 decks
+6% synergy
Smoke Spirits' Aid
10% of 17557 decks
+10% synergy
Requisition Raid
10% of 5049 decks
+7% synergy
Damn
10% of 1621 decks
-6% synergy
Ascend from Avernus
10% of 6830 decks
+8% synergy
Bala Ged Recovery
10% of 31554 decks
+1% synergy
Agadeem's Awakening
9% of 13445 decks
+6% synergy
Explore
9% of 31554 decks
-0% synergy
Yuna's Decision
9% of 2691 decks
+9% synergy
Fangs of Kalonia
9% of 20206 decks
+7% synergy
Tezzeret's Gambit
8% of 5547 decks
+5% synergy
Traverse the Outlands
8% of 31554 decks
+6% synergy
Soul's Majesty
8% of 31554 decks
+7% synergy
Will of the Abzan
8% of 2929 decks
+6% synergy
Thrilling Discovery
8% of 1701 decks
+6% synergy
Harmonize
8% of 31554 decks
-1% synergy
Vastwood Surge
8% of 31554 decks
+7% synergy
Hour of Reckoning
6% of 6830 decks
+3% synergy
Painful Truths
6% of 13445 decks
+4% synergy
Patch Up
6% of 6830 decks
+6% synergy
Vandalblast
6% of 17557 decks
-9% synergy
Stump Stomp
6% of 11244 decks
+0% synergy
Neoform
6% of 5547 decks
+1% synergy
Rise of the Dark Realms
6% of 13445 decks
+2% synergy
Perennation
6% of 475 decks
+3% synergy
Collision of Realms
6% of 17557 decks
+6% synergy
Finale of Revelation
6% of 5547 decks
+3% synergy
Utility Artifacts
Blitzball Stadium
33% of 745 decks
+33% synergy
Swiftfoot Boots
29% of 31554 decks
+2% synergy
Izzet Generatorium
24% of 947 decks
+22% synergy
The Ozolith
20% of 31554 decks
+16% synergy
Ozolith, the Shattered Spire
18% of 31554 decks
+14% synergy
Mage Slayer
18% of 17557 decks
+16% synergy
Skullclamp
18% of 31554 decks
+6% synergy
The Great Henge
17% of 31554 decks
+8% synergy
Lightning Greaves
15% of 31554 decks
-10% synergy
Birthing Pod
12% of 31554 decks
+10% synergy
Fist of Suns
12% of 357 decks
+5% synergy
Blackblade Reforged
10% of 31554 decks
+7% synergy
Door to Nothingness
10% of 357 decks
+6% synergy
Emerald Medallion
10% of 31554 decks
+8% synergy
The Skullspore Nexus
9% of 28357 decks
+6% synergy
Sword of Vengeance
8% of 31554 decks
+7% synergy
Cauldron of Souls
8% of 31554 decks
+7% synergy
Rhonas's Monument
7% of 31554 decks
+6% synergy
Embercleave
7% of 17557 decks
+5% synergy
Fireshrieker
7% of 31554 decks
+5% synergy
The Earth Crystal
7% of 1935 decks
+6% synergy
Doors of Durin
7% of 17557 decks
+4% synergy
Ashnod's Altar
6% of 31554 decks
-1% synergy
Commander's Sphere
6% of 31554 decks
-8% synergy
Enchantments
Rhythm of the Wild
34% of 17557 decks
+10% synergy
Industrial Advancement
32% of 17557 decks
+31% synergy
Hardened Scales
29% of 31554 decks
+20% synergy
Temur Ascendancy
26% of 1336 decks
+11% synergy
Branching Evolution
24% of 31554 decks
+18% synergy
Greater Good
24% of 31554 decks
+19% synergy
Annie Joins Up
24% of 1328 decks
+11% synergy
Summoner's Sending
24% of 798 decks
+23% synergy
Invigorating Hot Spring
22% of 17557 decks
+19% synergy
Simic Ascendancy
21% of 5547 decks
+16% synergy
Felidar Retreat
19% of 6830 decks
+13% synergy
Leyline of the Guildpact
18% of 269 decks
+3% synergy
The First Tyrannic War
17% of 1336 decks
+16% synergy
Brokers Ascendancy
17% of 2071 decks
+11% synergy
Tribute to the World Tree
17% of 31554 decks
+10% synergy
Doubling Season
16% of 31554 decks
+6% synergy
Mirari's Wake
15% of 6830 decks
+3% synergy
Birthing Ritual
15% of 20347 decks
+14% synergy
Bear Umbra
14% of 31554 decks
+10% synergy
Sphere Grid
14% of 2691 decks
+13% synergy
Hydra's Growth
14% of 31554 decks
+12% synergy
Bred for the Hunt
14% of 5547 decks
+11% synergy
Wild Growth
14% of 31554 decks
+3% synergy
Unquenchable Fury
13% of 17557 decks
+13% synergy
Unbound Flourishing
13% of 31554 decks
+12% synergy
Evolutionary Leap
13% of 31554 decks
+11% synergy
Barrensteppe Siege
12% of 564 decks
+10% synergy
Innkeeper's Talent
12% of 18438 decks
+7% synergy
Snake Umbra
12% of 31554 decks
+9% synergy
Leyline of Mutation
11% of 174 decks
+6% synergy
Inexorable Tide
11% of 5547 decks
+9% synergy
Rancor
11% of 31554 decks
+6% synergy
Mayael's Aria
11% of 1701 decks
+8% synergy
Ordeal of Nylea
11% of 31554 decks
+10% synergy
Utopia Sprawl
11% of 31554 decks
+3% synergy
Warstorm Surge
10% of 17557 decks
+6% synergy
Unnatural Growth
10% of 31554 decks
+4% synergy
One with the Kami
10% of 31554 decks
+10% synergy
Cathars' Crusade
10% of 6830 decks
+5% synergy
Resourceful Defense
10% of 6830 decks
+9% synergy
Court of Garenbrig
9% of 29339 decks
+7% synergy
Together Forever
9% of 6830 decks
+8% synergy
Elemental Mastery
9% of 17557 decks
+9% synergy
Animate Dead
9% of 13445 decks
-0% synergy
Elemental Bond
9% of 31554 decks
+4% synergy
Shadow in the Warp
9% of 17557 decks
+6% synergy
Phyrexian Reclamation
9% of 13445 decks
+5% synergy
Concord with the Kami
9% of 31554 decks
+8% synergy
Anointed Procession
9% of 6830 decks
+0% synergy
Hadana's Climb
8% of 5547 decks
+7% synergy
Planeswalkers
Kiora, Behemoth Beckoner
9% of 5547 decks
+5% synergy
Nissa, Who Shakes the World
7% of 31554 decks
+4% synergy
Nissa, Voice of Zendikar
6% of 31554 decks
+5% synergy
Utility Lands
Kessig Wolf Run
26% of 17557 decks
+10% synergy
Bojuka Bog
26% of 13445 decks
-4% synergy
Gavony Township
26% of 6830 decks
+17% synergy
Reliquary Tower
23% of 31554 decks
-6% synergy
Oran-Rief, the Vastwood
23% of 31554 decks
+19% synergy
Mosswort Bridge
22% of 31554 decks
+11% synergy
Rogue's Passage
20% of 31554 decks
+0% synergy
Takenuma, Abandoned Mire
19% of 13445 decks
+10% synergy
Raging Ravine
17% of 17557 decks
+14% synergy
Boseiju, Who Endures
17% of 31554 decks
-2% synergy
Yavimaya, Cradle of Growth
15% of 31554 decks
+6% synergy
Karn's Bastion
13% of 31554 decks
+8% synergy
Spinerock Knoll
12% of 17557 decks
+8% synergy
Castle Garenbrig
12% of 31554 decks
+7% synergy
Phyrexian Tower
12% of 13445 decks
+3% synergy
Temple of the False God
11% of 31554 decks
+1% synergy
Lair of the Hydra
10% of 31554 decks
+8% synergy
Nykthos, Shrine to Nyx
7% of 31554 decks
+1% synergy
Otawara, Soaring City
7% of 5547 decks
-10% synergy
Urborg, Tomb of Yawgmoth
6% of 31554 decks
-3% synergy
Vault of the Archangel
6% of 1621 decks
-6% synergy
Llanowar Reborn
5% of 31554 decks
+3% synergy
Alchemist's Refuge
5% of 5547 decks
-1% synergy
Mana Artifacts
Sol Ring
74% of 31554 decks
-10% synergy
Arcane Signet
55% of 31554 decks
-17% synergy
Timeless Lotus
19% of 357 decks
+7% synergy
Simic Signet
11% of 5547 decks
-2% synergy
Selesnya Signet
11% of 6830 decks
+2% synergy
Talisman of Curiosity
9% of 5547 decks
-4% synergy
Talisman of Unity
9% of 6830 decks
+1% synergy
Talisman of Creativity
9% of 1336 decks
-20% synergy
Gruul Signet
8% of 17557 decks
-3% synergy
Fellwar Stone
8% of 31554 decks
-13% synergy
Golgari Signet
8% of 13445 decks
-4% synergy
Izzet Signet
7% of 1336 decks
-19% synergy
Herd Heirloom
7% of 6817 decks
+3% synergy
Talisman of Resilience
7% of 13445 decks
-6% synergy
Elementalist's Palette
7% of 31554 decks
+6% synergy
Thought Vessel
6% of 31554 decks
-12% synergy
Dimir Signet
6% of 2137 decks
-22% synergy
Azorius Signet
6% of 2071 decks
-19% synergy
Lands
Command Tower
75% of 31554 decks
+1% synergy
Cinder Glade
64% of 17557 decks
+25% synergy
Ziatora's Proving Ground
62% of 9528 decks
+33% synergy
Canopy Vista
53% of 6830 decks
+16% synergy
Smoldering Marsh
52% of 9528 decks
+19% synergy
Savage Lands
52% of 9528 decks
+29% synergy
Blood Crypt
50% of 9528 decks
+12% synergy
Overgrown Tomb
49% of 13445 decks
+8% synergy
Jungle Shrine
49% of 1701 decks
+16% synergy
Frontier Bivouac
49% of 1336 decks
+20% synergy
Seaside Citadel
47% of 2071 decks
+20% synergy
Opulent Palace
46% of 2137 decks
+17% synergy
Exotic Orchard
45% of 31554 decks
+9% synergy
Hinterland Harbor
43% of 5547 decks
+13% synergy
Luxury Suite
42% of 9528 decks
+16% synergy
Undergrowth Stadium
41% of 13445 decks
+16% synergy
Prairie Stream
41% of 2071 decks
+7% synergy
Stomping Ground
41% of 17557 decks
+1% synergy
Sandsteppe Citadel
40% of 1621 decks
+13% synergy
Game Trail
40% of 17557 decks
+24% synergy
Llanowar Wastes
40% of 13445 decks
+13% synergy
Spara's Headquarters
37% of 2071 decks
+8% synergy
Sunpetal Grove
37% of 6830 decks
+12% synergy
Mossfire Valley
37% of 17557 decks
+25% synergy
Woodland Cemetery
36% of 13445 decks
+6% synergy
Glacial Fortress
35% of 2071 decks
+6% synergy
Jetmir's Garden
34% of 1701 decks
+4% synergy
Indatha Triome
34% of 1621 decks
+5% synergy
Temple Garden
34% of 6830 decks
-5% synergy
Ketria Triome
33% of 1336 decks
+1% synergy
Zagoth Triome
33% of 2137 decks
+4% synergy
Spire Garden
32% of 17557 decks
+9% synergy
Sulfurous Springs
30% of 9528 decks
+9% synergy
Yavimaya Coast
30% of 5547 decks
+3% synergy
Breeding Pool
30% of 5547 decks
-10% synergy
Dragonskull Summit
30% of 9528 decks
-3% synergy
The World Tree
30% of 357 decks
-2% synergy
Rejuvenating Springs
29% of 5547 decks
+1% synergy
Rockfall Vale
29% of 17557 decks
+7% synergy
Twilight Mire
29% of 13445 decks
+18% synergy
Rootbound Crag
29% of 17557 decks
+3% synergy
Sunken Hollow
28% of 2137 decks
-7% synergy
Hallowed Fountain
28% of 2071 decks
-12% synergy
Shadowblood Ridge
28% of 9528 decks
+15% synergy
Bountiful Promenade
27% of 6830 decks
+4% synergy
Gruul Turf
27% of 17557 decks
+12% synergy
Sulfur Falls
27% of 1336 decks
-6% synergy
Fortified Village
26% of 6830 decks
+11% synergy
Karplusan Forest
26% of 17557 decks
+8% synergy
Dreamroot Cascade
26% of 5547 decks
+6% synergy