Omnath, Locus of the Roil (Commander) - cEDH

Background image for Rebuilding Omnath, Locus of the Roil With Lorwyn Eclipsed
Kara Blinebry
Feb 12, 2026
Rebuilding Omnath, Locus of the Roil With Lorwyn Eclipsed
Elementals are receiving some love in Lorwyn Eclipsed, so we're talking about the new hotness in the context of Omnath, Locus of the Roil.
Deck Filters
Cardsphere
Archidekt
Commander Spellbook
Moxfield
Scryfall
MTGStocks
Hexing Squelcher
50%inclusion2 decks4 decks
41%synergy
Formidable Speaker
40%inclusion2 decks5 decks
37%synergy
Chomping Changeling
25%inclusion1 decks4 decks
24%synergy
Prismatic Undercurrents
25%inclusion1 decks4 decks
24%synergy
Champion of the Path
25%inclusion1 decks4 decks
24%synergy
High Synergy Cards
Squee, the Immortal
69%inclusion9 decks13 decks
66%synergy
Food Chain
69%inclusion9 decks13 decks
66%synergy
Mystic Remora
77%inclusion10 decks13 decks
64%synergy
Mindbreak Trap
69%inclusion9 decks13 decks
64%synergy
Brain Freeze
69%inclusion9 decks13 decks
63%synergy
Finale of Devastation
69%inclusion9 decks13 decks
60%synergy
Otawara, Soaring City
77%inclusion10 decks13 decks
60%synergy
Mental Misstep
62%inclusion8 decks13 decks
56%synergy
Boseiju, Who Endures
77%inclusion10 decks13 decks
56%synergy
Force of Negation
62%inclusion8 decks13 decks
55%synergy
Top Cards
Birds of Paradise
85%inclusion11 decks13 decks
50%synergy
Deflecting Swat
69%inclusion9 decks13 decks
51%synergy
Flusterstorm
62%inclusion8 decks13 decks
54%synergy
Bloom Tender
62%inclusion8 decks13 decks
51%synergy
Delighted Halfling
62%inclusion8 decks13 decks
45%synergy
Misthollow Griffin
54%inclusion7 decks13 decks
53%synergy
Fierce Guardianship
54%inclusion7 decks13 decks
36%synergy
Cyclonic Rift
54%inclusion7 decks13 decks
32%synergy
Mystical Tutor
54%inclusion7 decks13 decks
42%synergy
Veil of Summer
54%inclusion7 decks13 decks
47%synergy
Game Changers
Underworld Breach
77%inclusion10 decks13 decks
69%synergy
Rhystic Study
77%inclusion10 decks13 decks
58%synergy
Ancient Tomb
69%inclusion9 decks13 decks
58%synergy
Worldly Tutor
69%inclusion9 decks13 decks
55%synergy
Chrome Mox
69%inclusion9 decks13 decks
61%synergy
Mox Diamond
69%inclusion9 decks13 decks
63%synergy
Crop Rotation
69%inclusion9 decks13 decks
58%synergy
Gamble
69%inclusion9 decks13 decks
61%synergy
Lion's Eye Diamond
69%inclusion9 decks13 decks
65%synergy
Force of Will
62%inclusion8 decks13 decks
53%synergy
Creatures
Badgermole Cub
60%inclusion3 decks5 decks
55%synergy
Thassa's Oracle
54%inclusion7 decks13 decks
52%synergy
Eternal Scourge
46%inclusion6 decks13 decks
45%synergy
Azusa, Lost but Seeking
46%inclusion6 decks13 decks
37%synergy
Lotus Cobra
46%inclusion6 decks13 decks
37%synergy
Wan Shi Tong, Librarian
40%inclusion2 decks5 decks
34%synergy
Risen Reef
38%inclusion5 decks13 decks
36%synergy
Ragavan, Nimble Pilferer
38%inclusion5 decks13 decks
32%synergy
Faerie Mastermind
38%inclusion5 decks13 decks
35%synergy
Nissa, Resurgent Animist
38%inclusion5 decks13 decks
37%synergy
Ashaya, Soul of the Wild
38%inclusion5 decks13 decks
36%synergy
Imperial Recruiter
38%inclusion5 decks13 decks
34%synergy
Dryad of the Ilysian Grove
38%inclusion5 decks13 decks
31%synergy
Eternal Witness
38%inclusion5 decks13 decks
22%synergy
Elvish Mystic
38%inclusion5 decks13 decks
27%synergy
Pollywog Prodigy
38%inclusion5 decks13 decks
36%synergy
Valley Floodcaller
31%inclusion4 decks13 decks
27%synergy
Scute Swarm
31%inclusion4 decks13 decks
24%synergy
Endurance
31%inclusion4 decks13 decks
29%synergy
Simian Spirit Guide
31%inclusion4 decks13 decks
26%synergy
Elvish Spirit Guide
31%inclusion4 decks13 decks
25%synergy
Kinnan, Bonder Prodigy
31%inclusion4 decks13 decks
26%synergy
Dualcaster Mage
31%inclusion4 decks13 decks
27%synergy
The Cabbage Merchant
29%inclusion2 decks7 decks
26%synergy
Icetill Explorer
29%inclusion2 decks7 decks
25%synergy
Twinflame Travelers
25%inclusion1 decks4 decks
23%synergy
Vibrance
25%inclusion1 decks4 decks
21%synergy
Omni-Changeling
25%inclusion1 decks4 decks
24%synergy
Soulbright Seeker
25%inclusion1 decks4 decks
25%synergy
Aftermath Analyst
23%inclusion3 decks13 decks
22%synergy
Oracle of Mul Daya
23%inclusion3 decks13 decks
17%synergy
Tatyova, Benthic Druid
23%inclusion3 decks13 decks
15%synergy
Omnath, Locus of Rage
23%inclusion3 decks13 decks
17%synergy
Drift of Phantasms
23%inclusion3 decks13 decks
22%synergy
Destiny Spinner
23%inclusion3 decks13 decks
22%synergy
Tireless Provisioner
23%inclusion3 decks13 decks
13%synergy
Enduring Vitality
23%inclusion3 decks13 decks
15%synergy
Llanowar Elves
23%inclusion3 decks13 decks
8%synergy
Springheart Nantuko
23%inclusion3 decks13 decks
19%synergy
Fyndhorn Elves
23%inclusion3 decks13 decks
17%synergy
Ashling, Rekindled
20%inclusion1 decks5 decks
19%synergy
Mutable Explorer
20%inclusion1 decks5 decks
20%synergy
Roaming Throne
15%inclusion2 decks13 decks
6%synergy
Spellseeker
15%inclusion2 decks13 decks
9%synergy
Tangled Florahedron
15%inclusion2 decks13 decks
14%synergy
Vigor
15%inclusion2 decks13 decks
14%synergy
Nyxbloom Ancient
15%inclusion2 decks13 decks
12%synergy
Cavalier of Flame
15%inclusion2 decks13 decks
15%synergy
Vexing Shusher
15%inclusion2 decks13 decks
14%synergy
Mockingbird
15%inclusion2 decks13 decks
12%synergy
Instants
Chord of Calling
54%inclusion7 decks13 decks
47%synergy
An Offer You Can't Refuse
46%inclusion6 decks13 decks
27%synergy
Swan Song
46%inclusion6 decks13 decks
32%synergy
Pact of Negation
46%inclusion6 decks13 decks
40%synergy
Noxious Revival
46%inclusion6 decks13 decks
35%synergy
Chain of Vapor
38%inclusion5 decks13 decks
35%synergy
Borne Upon a Wind
38%inclusion5 decks13 decks
35%synergy
Growth Spiral
38%inclusion5 decks13 decks
13%synergy
Red Elemental Blast
31%inclusion4 decks13 decks
27%synergy
Pyroblast
31%inclusion4 decks13 decks
27%synergy
Lightning Bolt
23%inclusion3 decks13 decks
12%synergy
Intuition
23%inclusion3 decks13 decks
22%synergy
Beast Within
23%inclusion3 decks13 decks
-15%synergy
Sink into Stupor
23%inclusion3 decks13 decks
16%synergy
Cycle of Renewal
20%inclusion1 decks5 decks
10%synergy
Frantic Search
15%inclusion2 decks13 decks
2%synergy
Gifts Ungiven
15%inclusion2 decks13 decks
14%synergy
Into the Flood Maw
15%inclusion2 decks13 decks
13%synergy
Rapid Hybridization
15%inclusion2 decks13 decks
3%synergy
Entish Restoration
15%inclusion2 decks13 decks
8%synergy
Mana Drain
15%inclusion2 decks13 decks
3%synergy
Ghostly Flicker
15%inclusion2 decks13 decks
10%synergy
Muddle the Mixture
15%inclusion2 decks13 decks
13%synergy
Heroic Intervention
15%inclusion2 decks13 decks
-11%synergy
Flare of Denial
15%inclusion2 decks13 decks
13%synergy
Dispel
15%inclusion2 decks13 decks
13%synergy
Redirect Lightning
14%inclusion1 decks7 decks
6%synergy
Auroral Procession
10%inclusion1 decks10 decks
6%synergy
Retraction Helix
7.7%inclusion1 decks13 decks
7%synergy
Archdruid's Charm
7.7%inclusion1 decks13 decks
4%synergy
Force of Vigor
7.7%inclusion1 decks13 decks
5%synergy
Play with Fire
7.7%inclusion1 decks13 decks
8%synergy
Repulsive Mutation
7.7%inclusion1 decks13 decks
4%synergy
Roiling Regrowth
7.7%inclusion1 decks13 decks
5%synergy
Back to Nature
7.7%inclusion1 decks13 decks
7%synergy
Annul
7.7%inclusion1 decks13 decks
7%synergy
Dramatic Reversal
7.7%inclusion1 decks13 decks
6%synergy
March of Swirling Mist
7.7%inclusion1 decks13 decks
6%synergy
Realms Uncharted
7.7%inclusion1 decks13 decks
7%synergy
Snapback
7.7%inclusion1 decks13 decks
8%synergy
Abrade
7.7%inclusion1 decks13 decks
2%synergy
Geistwave
7.7%inclusion1 decks13 decks
8%synergy
Fading Hope
7.7%inclusion1 decks13 decks
7%synergy
Ceremonious Rejection
7.7%inclusion1 decks13 decks
8%synergy
Harrow
7.7%inclusion1 decks13 decks
-4%synergy
Opt
7.7%inclusion1 decks13 decks
1%synergy
Quicken
7.7%inclusion1 decks13 decks
7%synergy
Miscast
7.7%inclusion1 decks13 decks
7%synergy
Autumn's Veil
7.7%inclusion1 decks13 decks
7%synergy
Pongify
7.7%inclusion1 decks13 decks
-4%synergy
Sorceries
Neoform
46%inclusion6 decks13 decks
42%synergy
Wheel of Fortune
38%inclusion5 decks13 decks
34%synergy
Eldritch Evolution
31%inclusion4 decks13 decks
25%synergy
Jeska's Will
31%inclusion4 decks13 decks
13%synergy
Manipulate Fate
31%inclusion4 decks13 decks
31%synergy
Green Sun's Zenith
31%inclusion4 decks13 decks
26%synergy
Twinflame
31%inclusion4 decks13 decks
29%synergy
Nature's Rhythm
30%inclusion3 decks10 decks
23%synergy
Windfall
23%inclusion3 decks13 decks
14%synergy
Three Visits
23%inclusion3 decks13 decks
-4%synergy
Awaken the Woods
23%inclusion3 decks13 decks
21%synergy
Rampant Growth
23%inclusion3 decks13 decks
-11%synergy
Shared Roots
20%inclusion1 decks5 decks
8%synergy
Blasphemous Act
15%inclusion2 decks13 decks
-18%synergy
Cultivate
15%inclusion2 decks13 decks
-27%synergy
Explore
15%inclusion2 decks13 decks
1%synergy
Bala Ged Recovery
15%inclusion2 decks13 decks
8%synergy
Summer Bloom
15%inclusion2 decks13 decks
11%synergy
Sylvan Scrying
15%inclusion2 decks13 decks
13%synergy
Gitaxian Probe
15%inclusion2 decks13 decks
10%synergy
Farseek
15%inclusion2 decks13 decks
-32%synergy
Nature's Lore
15%inclusion2 decks13 decks
-19%synergy
Scapeshift
15%inclusion2 decks13 decks
14%synergy
Timetwister
15%inclusion2 decks13 decks
14%synergy
Contentious Plan
7.7%inclusion1 decks13 decks
7%synergy
Finale of Revelation
7.7%inclusion1 decks13 decks
5%synergy
Renegade Tactics
7.7%inclusion1 decks13 decks
8%synergy
Nahiri's Lithoforming
7.7%inclusion1 decks13 decks
7%synergy
Life from the Loam
7.7%inclusion1 decks13 decks
6%synergy
Ral's Reinforcements
7.7%inclusion1 decks13 decks
8%synergy
Open the Gates
7.7%inclusion1 decks13 decks
7%synergy
Kodama's Reach
7.7%inclusion1 decks13 decks
-24%synergy
Skyshroud Claim
7.7%inclusion1 decks13 decks
-2%synergy
Sylvan Awakening
7.7%inclusion1 decks13 decks
7%synergy
Transmute Artifact
7.7%inclusion1 decks13 decks
7%synergy
Genesis Ultimatum
7.7%inclusion1 decks13 decks
0%synergy
Clutch of Currents
7.7%inclusion1 decks13 decks
8%synergy
Worldsoul's Rage
7.7%inclusion1 decks13 decks
6%synergy
Crash Through
7.7%inclusion1 decks13 decks
7%synergy
Banefire
7.7%inclusion1 decks13 decks
7%synergy
Enter the Enigma
7.7%inclusion1 decks13 decks
4%synergy
Rite of Flame
7.7%inclusion1 decks13 decks
4%synergy
Tempt with Vengeance
7.7%inclusion1 decks13 decks
7%synergy
Molten Duplication
7.7%inclusion1 decks13 decks
7%synergy
Sylvan Tutor
7.7%inclusion1 decks13 decks
6%synergy
Foresight
7.7%inclusion1 decks13 decks
8%synergy
Regrowth
7.7%inclusion1 decks13 decks
3%synergy
Analyze the Pollen
7.7%inclusion1 decks13 decks
7%synergy
Tormenting Voice
7.7%inclusion1 decks13 decks
7%synergy
Utility Artifacts
The One Ring
46%inclusion6 decks13 decks
38%synergy
Zuran Orb
15%inclusion2 decks13 decks
13%synergy
Crucible of Worlds
15%inclusion2 decks13 decks
12%synergy
Lightning Greaves
15%inclusion2 decks13 decks
-10%synergy
Exploration Broodship
14%inclusion1 decks7 decks
13%synergy
Grafdigger's Cage
7.7%inclusion1 decks13 decks
8%synergy
Sword of Truth and Justice
7.7%inclusion1 decks13 decks
7%synergy
Sword of Hearth and Home
7.7%inclusion1 decks13 decks
7%synergy
Conduit of Worlds
7.7%inclusion1 decks13 decks
4%synergy
Grinding Station
7.7%inclusion1 decks13 decks
7%synergy
Defense Grid
7.7%inclusion1 decks13 decks
7%synergy
The Great Henge
7.7%inclusion1 decks13 decks
-2%synergy
Maskwood Nexus
7.7%inclusion1 decks13 decks
7%synergy
Swiftfoot Boots
7.7%inclusion1 decks13 decks
-17%synergy
Blackblade Reforged
7.7%inclusion1 decks13 decks
5%synergy
Folio of Fancies
7.7%inclusion1 decks13 decks
6%synergy
Excalibur, Sword of Eden
7.7%inclusion1 decks13 decks
7%synergy
Sword of Feast and Famine
7.7%inclusion1 decks13 decks
6%synergy
Amulet of Vigor
7.7%inclusion1 decks13 decks
7%synergy
Isochron Scepter
7.7%inclusion1 decks13 decks
6%synergy
Enchantments
Exploration
46%inclusion6 decks13 decks
36%synergy
Carpet of Flowers
38%inclusion5 decks13 decks
34%synergy
Wild Growth
31%inclusion4 decks13 decks
20%synergy
Sylvan Library
31%inclusion4 decks13 decks
24%synergy
Survival of the Fittest
23%inclusion3 decks13 decks
22%synergy
Zendikar's Roil
23%inclusion3 decks13 decks
21%synergy
Utopia Sprawl
23%inclusion3 decks13 decks
16%synergy
Burgeoning
23%inclusion3 decks13 decks
20%synergy
Impact Tremors
15%inclusion2 decks13 decks
9%synergy
Song of Creation
15%inclusion2 decks13 decks
7%synergy
Shapers' Sanctuary
7.7%inclusion1 decks13 decks
8%synergy
Spelunking
7.7%inclusion1 decks13 decks
5%synergy
Double Vision
7.7%inclusion1 decks13 decks
6%synergy
Rhythm of the Wild
7.7%inclusion1 decks13 decks
-13%synergy
Dress Down
7.7%inclusion1 decks13 decks
7%synergy
Colossal Majesty
7.7%inclusion1 decks13 decks
6%synergy
Prismatic Omen
7.7%inclusion1 decks13 decks
7%synergy
Temur Ascendancy
7.7%inclusion1 decks13 decks
-20%synergy
Boseiju Reaches Skyward
7.7%inclusion1 decks13 decks
8%synergy
Azusa's Many Journeys
7.7%inclusion1 decks13 decks
7%synergy
Freed from the Real
7.7%inclusion1 decks13 decks
6%synergy
Curiosity
7.7%inclusion1 decks13 decks
6%synergy
Garruk's Uprising
7.7%inclusion1 decks13 decks
-19%synergy
Wizard Class
7.7%inclusion1 decks13 decks
6%synergy
Season of Growth
7.7%inclusion1 decks13 decks
6%synergy
City on Fire
7.7%inclusion1 decks13 decks
7%synergy
Rites of Flourishing
7.7%inclusion1 decks13 decks
5%synergy
Keen Sense
7.7%inclusion1 decks13 decks
7%synergy
Copy Land
7.7%inclusion1 decks13 decks
7%synergy
Valakut Exploration
7.7%inclusion1 decks13 decks
3%synergy
Druid Class
7.7%inclusion1 decks13 decks
5%synergy
Growing Rites of Itlimoc
7.7%inclusion1 decks13 decks
4%synergy
Battles
Invasion of Ikoria
15%inclusion2 decks13 decks
11%synergy
Planeswalkers
Wrenn and Six
15%inclusion2 decks13 decks
14%synergy
Chandra, Acolyte of Flame
7.7%inclusion1 decks13 decks
8%synergy
Karn, the Great Creator
7.7%inclusion1 decks13 decks
7%synergy
Utility Lands
Mistrise Village
50%inclusion5 decks10 decks
33%synergy
Gaea's Cradle
46%inclusion6 decks13 decks
39%synergy
Shifting Woodland
38%inclusion5 decks13 decks
31%synergy
Yavimaya, Cradle of Growth
31%inclusion4 decks13 decks
15%synergy
Field of the Dead
31%inclusion4 decks13 decks
28%synergy
Urza's Saga
23%inclusion3 decks13 decks
17%synergy
Emergence Zone
23%inclusion3 decks13 decks
20%synergy
Dryad Arbor
15%inclusion2 decks13 decks
13%synergy
City of Traitors
15%inclusion2 decks13 decks
15%synergy
Wasteland
15%inclusion2 decks13 decks
15%synergy
Vesuva
15%inclusion2 decks13 decks
14%synergy
Valakut, the Molten Pinnacle
7.7%inclusion1 decks13 decks
7%synergy
Karn's Bastion
7.7%inclusion1 decks13 decks
5%synergy
Thespian's Stage
7.7%inclusion1 decks13 decks
6%synergy
Lotus Field
7.7%inclusion1 decks13 decks
7%synergy
Ghost Town
7.7%inclusion1 decks13 decks
7%synergy
Ghost Quarter
7.7%inclusion1 decks13 decks
7%synergy
Alchemist's Refuge
7.7%inclusion1 decks13 decks
3%synergy
Reliquary Tower
7.7%inclusion1 decks13 decks
-23%synergy
Sokenzan, Crucible of Defiance
7.7%inclusion1 decks13 decks
6%synergy
Strip Mine
7.7%inclusion1 decks13 decks
6%synergy
Kessig Wolf Run
7.7%inclusion1 decks13 decks
-7%synergy
Mana Artifacts
Sol Ring
85%inclusion11 decks13 decks
2%synergy
Lotus Petal
69%inclusion9 decks13 decks
59%synergy
Arcane Signet
69%inclusion9 decks13 decks
-3%synergy
Mana Vault
54%inclusion7 decks13 decks
46%synergy
Mox Opal
38%inclusion5 decks13 decks
34%synergy
Basalt Monolith
23%inclusion3 decks13 decks
21%synergy
Fellwar Stone
23%inclusion3 decks13 decks
6%synergy
Talisman of Creativity
15%inclusion2 decks13 decks
-1%synergy
Talisman of Curiosity
15%inclusion2 decks13 decks
0%synergy
Talisman of Impulse
15%inclusion2 decks13 decks
1%synergy
Nyx Lotus
7.7%inclusion1 decks13 decks
8%synergy
Grim Monolith
7.7%inclusion1 decks13 decks
6%synergy
Mox Amber
7.7%inclusion1 decks13 decks
0%synergy
Lands
Breeding Pool
92%inclusion12 decks13 decks
45%synergy
Scalding Tarn
92%inclusion12 decks13 decks
60%synergy
Misty Rainforest
92%inclusion12 decks13 decks
59%synergy
Wooded Foothills
92%inclusion12 decks13 decks
58%synergy
Command Tower
92%inclusion12 decks13 decks
1%synergy
Stomping Ground
92%inclusion12 decks13 decks
46%synergy
Steam Vents
85%inclusion11 decks13 decks
41%synergy
Forest
85%inclusion11 decks13 decks
-10%synergy
Windswept Heath
77%inclusion10 decks13 decks
65%synergy
Mountain
77%inclusion10 decks13 decks
-15%synergy
Island
77%inclusion10 decks13 decks
-17%synergy
Verdant Catacombs
62%inclusion8 decks13 decks
51%synergy
Tropical Island
62%inclusion8 decks13 decks
46%synergy
Volcanic Island
62%inclusion8 decks13 decks
47%synergy
Polluted Delta
62%inclusion8 decks13 decks
51%synergy
Taiga
62%inclusion8 decks13 decks
47%synergy
Flooded Strand
62%inclusion8 decks13 decks
50%synergy
Arid Mesa
54%inclusion7 decks13 decks
46%synergy
Mana Confluence
54%inclusion7 decks13 decks
43%synergy
Spire Garden
54%inclusion7 decks13 decks
25%synergy
Gemstone Caverns
54%inclusion7 decks13 decks
47%synergy
Bloodstained Mire
46%inclusion6 decks13 decks
38%synergy
Cavern of Souls
46%inclusion6 decks13 decks
39%synergy
City of Brass
46%inclusion6 decks13 decks
35%synergy
Ketria Triome
38%inclusion5 decks13 decks
-3%synergy
Commercial District
38%inclusion5 decks13 decks
27%synergy
Exotic Orchard
38%inclusion5 decks13 decks
-17%synergy
Rejuvenating Springs
38%inclusion5 decks13 decks
4%synergy
Training Center
31%inclusion4 decks13 decks
1%synergy
Cinder Glade
23%inclusion3 decks13 decks
-18%synergy
Prismatic Vista
23%inclusion3 decks13 decks
17%synergy
Shivan Reef
23%inclusion3 decks13 decks
-8%synergy
Sink into Stupor
23%inclusion3 decks13 decks
16%synergy
Tangled Florahedron
15%inclusion2 decks13 decks
14%synergy
Bala Ged Recovery
15%inclusion2 decks13 decks
8%synergy
Sulfur Falls
15%inclusion2 decks13 decks
-24%synergy
Hedge Maze
15%inclusion2 decks13 decks
3%synergy
Marsh Flats
15%inclusion2 decks13 decks
15%synergy
Hinterland Harbor
15%inclusion2 decks13 decks
-26%synergy
Talon Gates of Madara
15%inclusion2 decks13 decks
11%synergy
Starting Town
13%inclusion1 decks8 decks
11%synergy
Willowrush Verge
8.3%inclusion1 decks12 decks
0%synergy
Game Trail
7.7%inclusion1 decks13 decks
-4%synergy
Rockfall Vale
7.7%inclusion1 decks13 decks
-23%synergy
Swiftwater Cliffs
7.7%inclusion1 decks13 decks
2%synergy
Snow-Covered Island
7.7%inclusion1 decks13 decks
5%synergy
Rootbound Crag
7.7%inclusion1 decks13 decks
-31%synergy
Karplusan Forest
7.7%inclusion1 decks13 decks
-18%synergy
Simic Growth Chamber
7.7%inclusion1 decks13 decks
-9%synergy
Fabled Passage
7.7%inclusion1 decks13 decks
-4%synergy