Well of Ideas (Card)
Well of Ideas
In 15208 decks
1% of 2367818 decks
Oct 25, 2024
The Master of Keys Deck Tech
Unsummoned Skull looks for a way to make The Master of Keys shine in Commander with his latest deck tech.
Oct 11, 2024
Legends Legends - Hunding Gjornersen
Jeff Dunn brews around Human Warrior Hunding Gjornersen with a focus on good natured antics and his agreeable personality.
Kynaios and Tiro of Meletis
24.53% of 7795 decks
1912 decks
Nekusar, the Mindrazer
9.63% of 18156 decks
1749 decks
Kwain, Itinerant Meddler
31.31% of 5132 decks
1607 decks
Kami of the Crescent Moon
49.74% of 1888 decks
939 decks
Xyris, the Writhing Storm
8.67% of 10791 decks
936 decks
Heliod, the Radiant Dawn
17.14% of 4056 decks
695 decks
The Council of Four
16.53% of 3460 decks
572 decks
Kenrith, the Returned King
2.34% of 21513 decks
503 decks
Ian Malcolm, Chaotician
21.34% of 2249 decks
480 decks
Braids, Conjurer Adept
14.16% of 3220 decks
456 decks
Phelddagrif
14.71% of 2597 decks
382 decks
Kruphix, God of Horizons
5.75% of 3079 decks
177 decks
Círdan the Shipwright
8.80% of 1728 decks
152 decks
Ms. Bumbleflower
1.76% of 7630 decks
134 decks
Queza, Augur of Agonies
1.99% of 6366 decks
127 decks
Gor Muldrak, Amphinologist
8.00% of 1425 decks
114 decks
Sokrates, Athenian Teacher
8.24% of 1335 decks
110 decks
The Second Doctor // Leela, Sevateem Warrior
27.18% of 379 decks
103 decks
New Cards
Scrawling Crawler
77% of 189 decks
+70% synergy
Blasphemous Edict
62% of 13 decks
+27% synergy
Razorkin Needlehead
53% of 413 decks
+42% synergy
Winter, Misanthropic Guide
39% of 31 decks
+36% synergy
Enduring Vitality
31% of 114 decks
+6% synergy
High Synergy Cards
Rites of Flourishing
76% of 5868 decks
+74% synergy
Howling Mine
70% of 15208 decks
+68% synergy
Dictate of Kruphix
69% of 15208 decks
+68% synergy
Kami of the Crescent Moon
63% of 15208 decks
+61% synergy
Selvala, Explorer Returned
64% of 3815 decks
+61% synergy
Gluntch, the Bestower
60% of 3482 decks
+58% synergy
Tempt with Discovery
54% of 5868 decks
+50% synergy
Heartwood Storyteller
49% of 5868 decks
+48% synergy
Heartbeat of Spring
49% of 5868 decks
+48% synergy
Temple Bell
48% of 15208 decks
+47% synergy
Top Cards
Ghostly Prison
58% of 7897 decks
+47% synergy
Swords to Plowshares
53% of 7897 decks
-10% synergy
Cultivate
52% of 5868 decks
+5% synergy
Approach of the Second Sun
49% of 7884 decks
+46% synergy
Folio of Fancies
48% of 15023 decks
+47% synergy
The Second Doctor
48% of 3616 decks
+45% synergy
Underworld Dreams
48% of 3870 decks
+46% synergy
Arcane Denial
48% of 15208 decks
+28% synergy
Kwain, Itinerant Meddler
47% of 7794 decks
+45% synergy
Collective Voyage
47% of 5868 decks
+46% synergy
Creatures
Fate Unraveler
43% of 3870 decks
+41% synergy
Psychosis Crawler
40% of 15208 decks
+38% synergy
Veteran Explorer
39% of 5868 decks
+38% synergy
Sokrates, Athenian Teacher
39% of 1202 decks
+36% synergy
Stormfist Crusader
39% of 2849 decks
+35% synergy
The Council of Four
38% of 7355 decks
+34% synergy
Laboratory Maniac
38% of 15208 decks
+33% synergy
Ms. Bumbleflower
37% of 562 decks
+34% synergy
Rocco, Street Chef
36% of 1673 decks
+35% synergy
Edric, Spymaster of Trest
36% of 5868 decks
+34% synergy
Windborn Muse
36% of 7897 decks
+32% synergy
Xyris, the Writhing Storm
35% of 3912 decks
+33% synergy
Zhur-Taa Ancient
34% of 3960 decks
+33% synergy
Rootweaver Druid
34% of 5755 decks
+33% synergy
Triskaidekaphile
33% of 14504 decks
+30% synergy
Sheoldred, the Apocalypse
31% of 3376 decks
+26% synergy
Orcish Bowmasters
31% of 2274 decks
+20% synergy
Seizan, Perverter of Truth
31% of 3870 decks
+30% synergy
Master of Ceremonies
30% of 7471 decks
+29% synergy
Flumph
30% of 7661 decks
+29% synergy
Twenty-Toed Toad
30% of 1508 decks
+24% synergy
Loran of the Third Path
30% of 6620 decks
+23% synergy
Humble Defector
29% of 7116 decks
+27% synergy
Círdan the Shipwright
29% of 3231 decks
+27% synergy
Mischievous Mystic
29% of 28 decks
+24% synergy
Faerie Mastermind
29% of 10381 decks
+21% synergy
Magus of the Wheel
28% of 7112 decks
+24% synergy
The Locust God
27% of 7094 decks
+22% synergy
The Master of Keys
26% of 58 decks
+7% synergy
Master of the Feast
26% of 3870 decks
+25% synergy
Walking Archive
25% of 7897 decks
+25% synergy
Clinquant Skymage
25% of 28 decks
+23% synergy
Homunculus Horde
25% of 189 decks
+19% synergy
Jace's Archivist
24% of 15208 decks
+22% synergy
Zenith Chronicler
24% of 11212 decks
+24% synergy
Magus of the Vineyard
24% of 5868 decks
+24% synergy
Tidal Barracuda
23% of 14969 decks
+22% synergy
Heliod, the Radiant Dawn
23% of 5536 decks
+20% synergy
Chasm Skulker
22% of 15208 decks
+18% synergy
Body of Knowledge
21% of 14876 decks
+20% synergy
Nightscape Familiar
20% of 3870 decks
+18% synergy
Seedborn Muse
20% of 5868 decks
+12% synergy
Gixian Puppeteer
20% of 3119 decks
+18% synergy
Sycorax Commander
19% of 1053 decks
+19% synergy
The Lord of Pain
19% of 79 decks
-4% synergy
Yes Man, Personal Securitron
19% of 2199 decks
+17% synergy
Braids, Conjurer Adept
19% of 15208 decks
+18% synergy
Orzhov Advokist
19% of 7890 decks
+17% synergy
Kederekt Parasite
18% of 3870 decks
+17% synergy
Consecrated Sphinx
18% of 15208 decks
+13% synergy
Instants
Counterspell
45% of 15208 decks
+2% synergy
Path to Exile
36% of 7897 decks
-9% synergy
Vision Skeins
36% of 15208 decks
+35% synergy
Generous Gift
36% of 7852 decks
+10% synergy
Beast Within
34% of 5868 decks
-5% synergy
Chaos Warp
34% of 7118 decks
+1% synergy
Dawn's Truce
27% of 998 decks
+10% synergy
Sail into the West
27% of 3231 decks
+26% synergy
Everybody Lives!
25% of 3616 decks
+22% synergy
Perch Protection
25% of 872 decks
+20% synergy
Long River's Pull
24% of 1754 decks
+18% synergy
Oblation
24% of 7897 decks
+23% synergy
Negate
24% of 15208 decks
+1% synergy
Tempt with Mayhem
23% of 1053 decks
+22% synergy
Terminate
22% of 2905 decks
+2% synergy
Cyclonic Rift
22% of 15208 decks
-6% synergy
Words of Wisdom
22% of 15208 decks
+22% synergy
Dovin's Veto
22% of 7859 decks
+2% synergy
Teferi's Protection
21% of 7881 decks
+1% synergy
Aetherize
20% of 15208 decks
+15% synergy
Dream Fracture
19% of 15208 decks
+18% synergy
Growth Spiral
19% of 5827 decks
-3% synergy
An Offer You Can't Refuse
18% of 14109 decks
-3% synergy
Brainstorm
17% of 15208 decks
-4% synergy
Peerless Recycling
14% of 718 decks
+11% synergy
Take the Bait
14% of 905 decks
+11% synergy
Baleful Mastery
14% of 3714 decks
+11% synergy
Withering Torment
14% of 154 decks
-7% synergy
Bedevil
14% of 2869 decks
-0% synergy
Fog
14% of 5868 decks
+11% synergy
Dark Ritual
13% of 3870 decks
-9% synergy
Blue Sun's Zenith
12% of 15208 decks
+10% synergy
Heroic Intervention
12% of 5857 decks
-17% synergy
Void Rend
11% of 1424 decks
-3% synergy
Enlightened Tutor
11% of 7897 decks
-7% synergy
Stroke of Midnight
11% of 3958 decks
-1% synergy
Pongify
11% of 15208 decks
-1% synergy
Rakdos Charm
10% of 2905 decks
-4% synergy
Mystical Tutor
10% of 15208 decks
-6% synergy
Cerebral Vortex
9% of 7118 decks
+9% synergy
Your Temple Is Under Attack
9% of 7355 decks
+7% synergy
Swan Song
9% of 15208 decks
-7% synergy
Vampiric Tutor
9% of 3870 decks
-9% synergy
Crosis's Charm
9% of 2905 decks
+7% synergy
Truce
9% of 7897 decks
+9% synergy
Mana Drain
9% of 15208 decks
-7% synergy
Intellectual Offering
9% of 15208 decks
+8% synergy
Horrid Vigor
8% of 85 decks
+4% synergy
Fierce Guardianship
8% of 14969 decks
-10% synergy
Guff Rewrites History
8% of 3502 decks
+7% synergy
Sorceries
Tempt with Bunnies
45% of 872 decks
+39% synergy
Prosperity
42% of 15208 decks
+40% synergy
Windfall
40% of 15208 decks
+27% synergy
Minds Aglow
40% of 15208 decks
+39% synergy
Cut a Deal
38% of 7355 decks
+35% synergy
Kodama's Reach
34% of 5868 decks
+2% synergy
Farseek
32% of 5868 decks
-2% synergy
Secret Rendezvous
31% of 7751 decks
+29% synergy
Peer into the Abyss
30% of 3770 decks
+27% synergy
Whispering Madness
30% of 3870 decks
+27% synergy
Rampant Growth
28% of 5868 decks
-6% synergy
Dark Deal
24% of 3867 decks
+22% synergy
Blasphemous Act
24% of 7118 decks
-10% synergy
Pir's Whim
20% of 5834 decks
+19% synergy
Supreme Verdict
19% of 7897 decks
+5% synergy
Molten Psyche
19% of 7118 decks
+18% synergy
Skyscribing
18% of 15208 decks
+18% synergy
Farewell
17% of 7522 decks
+4% synergy
Fascination
17% of 15195 decks
+17% synergy
Fractured Identity
17% of 7881 decks
+15% synergy
Redress Fate
16% of 193 decks
+7% synergy
Nature's Lore
15% of 5868 decks
-17% synergy
New Frontiers
15% of 5868 decks
+15% synergy
Wear Down
15% of 779 decks
+11% synergy
Damnable Pact
14% of 3867 decks
+13% synergy
Winds of Change
14% of 7118 decks
+12% synergy
Demonic Tutor
14% of 3870 decks
-9% synergy
Burning Inquiry
14% of 7118 decks
+12% synergy
Promise of Loyalty
13% of 7751 decks
+11% synergy
Reforge the Soul
12% of 7118 decks
+10% synergy
Three Visits
12% of 5868 decks
-13% synergy
Hypergenesis
12% of 5868 decks
+11% synergy
Time Wipe
11% of 7859 decks
+4% synergy
Wheel of Fate
11% of 7118 decks
+10% synergy
Diabolic Tutor
11% of 3870 decks
+5% synergy
Scheming Symmetry
10% of 3807 decks
+8% synergy
Insatiable Avarice
10% of 752 decks
+5% synergy
Insurrection
9% of 7118 decks
+8% synergy
Feed the Swarm
9% of 3756 decks
-9% synergy
Starfall Invocation
9% of 998 decks
+4% synergy
Wheel of Misfortune
9% of 6925 decks
+5% synergy
Khorvath's Fury
8% of 7066 decks
+8% synergy
Flux
8% of 15208 decks
+8% synergy
Austere Command
8% of 7897 decks
-5% synergy
Ponder
8% of 15208 decks
-5% synergy
Incendiary Command
8% of 7118 decks
+7% synergy
Council's Judgment
8% of 7897 decks
+6% synergy
Game Plan
8% of 15099 decks
+7% synergy
Vandalblast
8% of 7118 decks
-9% synergy
Disrupt Decorum
7% of 7084 decks
+4% synergy
Utility Artifacts
Font of Mythos
46% of 15208 decks
+46% synergy
Venser's Journal
30% of 15208 decks
+29% synergy
Ghirapur Orrery
28% of 15171 decks
+27% synergy
Wedding Ring
27% of 7573 decks
+26% synergy
Horn of Greed
25% of 15208 decks
+24% synergy
Teferi's Puzzle Box
19% of 15208 decks
+18% synergy
Swiftfoot Boots
18% of 15208 decks
-10% synergy
Otherworld Atlas
17% of 15208 decks
+17% synergy
Helm of Awakening
16% of 15208 decks
+15% synergy
Lightning Greaves
15% of 15208 decks
-10% synergy
Spellbook
15% of 15208 decks
+14% synergy
Tempting Contract
15% of 14760 decks
+14% synergy
Door to Nothingness
12% of 901 decks
+8% synergy
Alhammarret's Archive
12% of 15191 decks
+10% synergy
Marina Vendrell's Grimoire
11% of 551 decks
+10% synergy
Crawlspace
11% of 15208 decks
+10% synergy
Elixir of Immortality
10% of 15208 decks
+8% synergy
Norn's Annex
9% of 7897 decks
+7% synergy
Wayfarer's Bauble
8% of 15208 decks
-2% synergy
Anvil of Bogardan
8% of 15208 decks
+8% synergy
Gate to the Aether
7% of 15208 decks
+7% synergy
Sapphire Medallion
7% of 15208 decks
+5% synergy
Iron Maiden
7% of 15208 decks
+7% synergy
Hithlain Rope
6% of 8121 decks
+6% synergy
Pendant of Prosperity
6% of 15029 decks
+5% synergy
The Magic Mirror
6% of 15023 decks
+5% synergy
Combine Chrysalis
6% of 5633 decks
+4% synergy
Ivory Tower
6% of 15208 decks
+5% synergy
Library of Leng
6% of 15208 decks
+5% synergy
Wishclaw Talisman
5% of 3805 decks
+0% synergy
Bucknard's Everfull Purse
5% of 14578 decks
+5% synergy
Enchantments
Spiteful Visions
46% of 2905 decks
+44% synergy
Propaganda
46% of 15208 decks
+35% synergy
Fevered Visions
43% of 7112 decks
+42% synergy
Smothering Tithe
42% of 7860 decks
+17% synergy
Dictate of Karametra
41% of 5868 decks
+40% synergy
Leyline of the Guildpact
38% of 229 decks
+15% synergy
Forced Fruition
37% of 15208 decks
+36% synergy
Struggle for Project Purity
36% of 3995 decks
+33% synergy
Phyrexian Tyranny
35% of 2905 decks
+33% synergy
Wizard Class
28% of 14578 decks
+24% synergy
Sphere of Safety
28% of 7897 decks
+23% synergy
Mana Flare
26% of 7118 decks
+25% synergy
Teferi's Ageless Insight
25% of 14934 decks
+20% synergy
Ominous Seas
24% of 14957 decks
+21% synergy
Megrim
23% of 3870 decks
+22% synergy
Rhystic Study
22% of 15208 decks
-6% synergy
On the Trail
21% of 1772 decks
+19% synergy
Annie Joins Up
20% of 569 decks
+0% synergy
Upwelling
19% of 5868 decks
+19% synergy
Dazzling Theater // Prop Room
19% of 120 decks
-14% synergy
Waste Not
19% of 3870 decks
+17% synergy
Proft's Eidetic Memory
19% of 4678 decks
+17% synergy
Leyline of Mutation
18% of 17 decks
-0% synergy
Restricted Office // Lecture Hall
18% of 193 decks
+4% synergy
Price of Knowledge
18% of 3870 decks
+17% synergy
Liliana's Caress
15% of 3870 decks
+14% synergy
Roaring Furnace // Steaming Sauna
14% of 161 decks
-3% synergy
Eladamri's Vineyard
12% of 5868 decks
+12% synergy
Awakening
12% of 5868 decks
+11% synergy
Walk-In Closet // Forgotten Cellar
11% of 62 decks
-15% synergy
Smuggler's Share
11% of 7471 decks
+9% synergy
Wilderness Reclamation
11% of 5827 decks
+7% synergy
Psychic Corrosion
11% of 15098 decks
+9% synergy
Trouble in Pairs
11% of 2448 decks
+4% synergy
Charred Foyer // Warped Space
11% of 233 decks
+5% synergy
Leyline of Anticipation
11% of 15208 decks
+6% synergy
Impact Tremors
10% of 7116 decks
+1% synergy
Helix Pinnacle
10% of 5868 decks
+9% synergy
Tenuous Truce
10% of 7471 decks
+9% synergy
Burgeoning
10% of 5868 decks
+6% synergy
Raiders' Wake
10% of 3843 decks
+9% synergy
Cramped Vents // Access Maze
9% of 132 decks
+4% synergy
Privileged Position
9% of 3815 decks
+6% synergy
Omniscience
9% of 15208 decks
+6% synergy
Mirrormade
9% of 15023 decks
+7% synergy
Powerbalance
9% of 1234 decks
+6% synergy
Knowledge Is Power
9% of 2448 decks
+7% synergy
Hive Mind
9% of 15208 decks
+8% synergy
Secret Arcade // Dusty Parlor
9% of 193 decks
-1% synergy
Bloodchief Ascension
9% of 3870 decks
+5% synergy
Planeswalkers
Jace Beleren
32% of 15208 decks
+31% synergy
Ob Nixilis, the Hate-Twisted
31% of 3827 decks
+30% synergy
Jace, Wielder of Mysteries
25% of 15077 decks
+22% synergy
Teferi, Temporal Pilgrim
11% of 12460 decks
+8% synergy
Ob Nixilis Reignited
7% of 3864 decks
+6% synergy
Teyo, Geometric Tactician
6% of 4048 decks
+5% synergy
Utility Lands
Reliquary Tower
73% of 15208 decks
+44% synergy
Mikokoro, Center of the Sea
42% of 15208 decks
+40% synergy
Geier Reach Sanitarium
28% of 15176 decks
+25% synergy
Bojuka Bog
21% of 3870 decks
-10% synergy
Mystic Sanctuary
17% of 15023 decks
+5% synergy
Temple of the False God
16% of 15208 decks
+6% synergy
Hall of Heliod's Generosity
13% of 7852 decks
+6% synergy
Maze of Ith
11% of 15208 decks
+9% synergy
Alchemist's Refuge
8% of 5868 decks
+1% synergy
Otawara, Soaring City
8% of 14222 decks
-9% synergy
Rogue's Passage
8% of 15208 decks
-12% synergy
Boseiju, Who Endures
7% of 5423 decks
-13% synergy
Yavimaya, Cradle of Growth
7% of 14654 decks
-3% synergy
Lonely Sandbar
5% of 15208 decks
+2% synergy
Academy Ruins
5% of 15208 decks
+0% synergy
Rivendell
5% of 8897 decks
-0% synergy
Mana Artifacts
Sol Ring
83% of 15208 decks
-1% synergy
Arcane Signet
70% of 15023 decks
-2% synergy
Thought Vessel
55% of 15184 decks
+38% synergy
Decanter of Endless Water
40% of 13881 decks
+35% synergy
Azorius Signet
32% of 7897 decks
+6% synergy
Dimir Signet
28% of 3870 decks
-1% synergy
Rakdos Signet
26% of 2905 decks
-4% synergy
Izzet Signet
24% of 7118 decks
-4% synergy
Commander's Sphere
21% of 15208 decks
+6% synergy
Chromatic Lantern
19% of 15208 decks
+9% synergy
Talisman of Progress
17% of 7897 decks
-5% synergy
Mind Stone
17% of 15208 decks
-0% synergy
Talisman of Dominance
16% of 3870 decks
-15% synergy
Fellwar Stone
16% of 15208 decks
-5% synergy
Orzhov Signet
14% of 1516 decks
-13% synergy
Simic Signet
13% of 5868 decks
-1% synergy
Talisman of Creativity
13% of 7035 decks
-16% synergy
Relic of Sauron
13% of 1449 decks
+1% synergy
Obelisk of Grixis
12% of 2905 decks
+11% synergy
Talisman of Hierarchy
11% of 1505 decks
-13% synergy
Talisman of Indulgence
11% of 2905 decks
-16% synergy
Timeless Lotus
8% of 758 decks
-6% synergy
Sky Diamond
8% of 15208 decks
+3% synergy
Midnight Clock
8% of 15023 decks
+3% synergy
Gruul Signet
8% of 3960 decks
-4% synergy
Gilded Lotus
8% of 15208 decks
+4% synergy
Victory Chimes
7% of 15099 decks
+6% synergy
Thran Dynamo
7% of 15208 decks
+2% synergy
Bounty Board
6% of 2940 decks
+6% synergy
Coveted Jewel
6% of 15091 decks
+5% synergy
Talisman of Curiosity
6% of 5819 decks
-7% synergy
Misleading Signpost
5% of 7125 decks
+3% synergy
Marble Diamond
5% of 7897 decks
+1% synergy
Lands
Command Tower
74% of 15208 decks
+0% synergy
Crumbling Necropolis
50% of 2905 decks
+19% synergy
Frontier Bivouac
49% of 3960 decks
+21% synergy
Seaside Citadel
48% of 3815 decks
+22% synergy
Mystic Monastery
44% of 3121 decks
+18% synergy
Prairie Stream
44% of 7894 decks
+10% synergy
Jungle Shrine
42% of 2845 decks
+10% synergy
Spara's Headquarters
41% of 3556 decks
+9% synergy
Hallowed Fountain
39% of 7897 decks
-2% synergy
Temple Garden
37% of 3815 decks
-3% synergy
Arcane Sanctum
36% of 1516 decks
+9% synergy
Exotic Orchard
36% of 15208 decks
+0% synergy
Ketria Triome
35% of 3906 decks
+3% synergy
Breeding Pool
34% of 5868 decks
-7% synergy
Jetmir's Garden
34% of 2643 decks
+1% synergy
Raugrin Triome
34% of 3074 decks
+7% synergy
Glacial Fortress
34% of 7897 decks
+9% synergy
The World Tree
34% of 869 decks
-0% synergy
Opulent Palace
32% of 1184 decks
+6% synergy
Sea of Clouds
31% of 7864 decks
+5% synergy
Stomping Ground
31% of 3960 decks
-10% synergy
Steam Vents
31% of 7118 decks
-8% synergy
Xander's Lounge
29% of 2672 decks
+2% synergy
Azorius Chancery
29% of 7897 decks
+14% synergy
Sunken Hollow
28% of 3864 decks
-7% synergy
Watery Grave
27% of 3870 decks
-14% synergy
Sacred Foundry
27% of 3121 decks
-9% synergy
Temple of Enlightenment
27% of 7897 decks
+10% synergy
Floodfarm Verge
27% of 305 decks
+6% synergy
Sandsteppe Citadel
27% of 988 decks
+1% synergy
Raffine's Tower
25% of 1424 decks
-3% synergy
Rejuvenating Springs
25% of 5755 decks
-3% synergy
Blood Crypt
25% of 2905 decks
-14% synergy
Sulfur Falls
25% of 7118 decks
-5% synergy
Port Town
25% of 7894 decks
+9% synergy
Evolving Wilds
24% of 15208 decks
+3% synergy
Hinterland Harbor
24% of 5868 decks
-3% synergy
Drowned Catacomb
24% of 3870 decks
-1% synergy
Dragonskull Summit
24% of 2905 decks
-7% synergy
Izzet Boilerworks
24% of 7118 decks
+8% synergy
Blazemire Verge
24% of 131 decks
+2% synergy
Training Center
22% of 6925 decks
-5% synergy
Smoldering Marsh
22% of 2900 decks
-10% synergy
Seething Landscape
22% of 420 decks
+6% synergy
Godless Shrine
21% of 1516 decks
-19% synergy
Simic Growth Chamber
21% of 5868 decks
+1% synergy
Deserted Beach
21% of 7618 decks
+5% synergy
Zagoth Triome
20% of 1161 decks
-10% synergy
Bountiful Promenade
20% of 3791 decks
-4% synergy
Cinder Glade
20% of 3959 decks
-19% synergy