Daryl, Hunter of Walkers (Commander) - Expensive Upgraded

Original Name:

Hansk, Slayer ZealotHansk, Slayer Zealot

Daryl, Hunter of Walkers
Rank #1,073
9decks
Background image for Am I the Bolas? - MLD for Thee, Not for Me
Mike Carrozza
Dec 17, 2025
Am I the Bolas? - MLD for Thee, Not for Me
Are you the bad guy if you use an opponent's combo against the table? Or did you just take advantage of the situation? Let's discuss.
Deck Filters
Cardsphere
Archidekt
Commander Spellbook
Moxfield
Scryfall
MTGStocks
Formidable Speaker
17%inclusion1 decks6 decks
16%synergy
High Synergy Cards
Spiteful Banditry
89%inclusion8 decks9 decks
87%synergy
Legolas's Quick Reflexes
78%inclusion7 decks9 decks
74%synergy
Reap
67%inclusion6 decks9 decks
66%synergy
Aether Flash
67%inclusion6 decks9 decks
66%synergy
Repercussion
67%inclusion6 decks9 decks
66%synergy
Delayed Blast Fireball
67%inclusion6 decks9 decks
63%synergy
Deflecting Swat
78%inclusion7 decks9 decks
61%synergy
Three Visits
89%inclusion8 decks9 decks
61%synergy
Vigor
67%inclusion6 decks9 decks
61%synergy
Basilisk Collar
67%inclusion6 decks9 decks
60%synergy
Top Cards
Wild Growth
67%inclusion6 decks9 decks
50%synergy
Fanatic of Rhonas
67%inclusion6 decks9 decks
48%synergy
Nature's Lore
67%inclusion6 decks9 decks
29%synergy
Lightning Greaves
67%inclusion6 decks9 decks
45%synergy
Heroic Intervention
67%inclusion6 decks9 decks
29%synergy
Sting, the Glinting Dagger
56%inclusion5 decks9 decks
53%synergy
Defense of the Heart
56%inclusion5 decks9 decks
52%synergy
Crawlspace
56%inclusion5 decks9 decks
55%synergy
Volcanic Fallout
56%inclusion5 decks9 decks
55%synergy
Utopia Sprawl
44%inclusion4 decks9 decks
32%synergy
Game Changers
Jeska's Will
56%inclusion5 decks9 decks
39%synergy
Seedborn Muse
44%inclusion4 decks9 decks
39%synergy
Ancient Tomb
44%inclusion4 decks9 decks
36%synergy
The One Ring
44%inclusion4 decks9 decks
38%synergy
Field of the Dead
22%inclusion2 decks9 decks
20%synergy
The Tabernacle at Pendrell Vale
11%inclusion1 decks9 decks
11%synergy
Worldly Tutor
11%inclusion1 decks9 decks
-1%synergy
Crop Rotation
11%inclusion1 decks9 decks
3%synergy
Creatures
Roaming Throne
44%inclusion4 decks9 decks
36%synergy
Saryth, the Viper's Fang
44%inclusion4 decks9 decks
39%synergy
Eternal Witness
33%inclusion3 decks9 decks
16%synergy
Brash Taunter
33%inclusion3 decks9 decks
30%synergy
Llanowar Elves
33%inclusion3 decks9 decks
0%synergy
Magda, the Hoardmaster
33%inclusion3 decks9 decks
31%synergy
Pygmy Kavu
33%inclusion3 decks9 decks
33%synergy
Sakura-Tribe Elder
33%inclusion3 decks9 decks
9%synergy
Rampaging Ferocidon
33%inclusion3 decks9 decks
33%synergy
Ripjaw Raptor
33%inclusion3 decks9 decks
32%synergy
Birds of Paradise
33%inclusion3 decks9 decks
4%synergy
Goblin Anarchomancer
33%inclusion3 decks9 decks
-14%synergy
Etali, Primal Storm
22%inclusion2 decks9 decks
6%synergy
Vrondiss, Rage of Ancients
22%inclusion2 decks9 decks
21%synergy
Elvish Mystic
22%inclusion2 decks9 decks
-4%synergy
Simian Spirit Guide
22%inclusion2 decks9 decks
15%synergy
Hellkite Charger
22%inclusion2 decks9 decks
18%synergy
Old Gnawbone
22%inclusion2 decks9 decks
16%synergy
Klothys, God of Destiny
22%inclusion2 decks9 decks
20%synergy
Apex Altisaur
22%inclusion2 decks9 decks
20%synergy
Toralf, God of Fury
22%inclusion2 decks9 decks
22%synergy
Kogla, the Titan Ape
22%inclusion2 decks9 decks
12%synergy
Torbran, Thane of Red Fell
22%inclusion2 decks9 decks
19%synergy
Freestrider Lookout
22%inclusion2 decks9 decks
21%synergy
Tinder Wall
22%inclusion2 decks9 decks
17%synergy
Fyndhorn Elves
22%inclusion2 decks9 decks
6%synergy
Pinnacle Monk
22%inclusion2 decks9 decks
18%synergy
Terror of the Peaks
22%inclusion2 decks9 decks
16%synergy
Ranging Raptors
22%inclusion2 decks9 decks
21%synergy
Twinflame Tyrant
22%inclusion2 decks9 decks
18%synergy
Balefire Dragon
22%inclusion2 decks9 decks
19%synergy
Goldspan Dragon
22%inclusion2 decks9 decks
16%synergy
Cheering Crowd
17%inclusion1 decks6 decks
16%synergy
The Cabbage Merchant
13%inclusion1 decks8 decks
12%synergy
Knuckles the Echidna
13%inclusion1 decks8 decks
11%synergy
Gogo, Mysterious Mime
13%inclusion1 decks8 decks
12%synergy
Utvara Hellkite
11%inclusion1 decks9 decks
9%synergy
Hardbristle Bandit
11%inclusion1 decks9 decks
11%synergy
Breeches, Eager Pillager
11%inclusion1 decks9 decks
11%synergy
Ashaya, Soul of the Wild
11%inclusion1 decks9 decks
7%synergy
Varchild, Betrayer of Kjeldor
11%inclusion1 decks9 decks
11%synergy
Ragavan, Nimble Pilferer
11%inclusion1 decks9 decks
3%synergy
Runic Armasaur
11%inclusion1 decks9 decks
9%synergy
Primordial Sage
11%inclusion1 decks9 decks
9%synergy
Cultivator Colossus
11%inclusion1 decks9 decks
8%synergy
Territorial Aetherkite
11%inclusion1 decks9 decks
11%synergy
Wandering Archaic
11%inclusion1 decks9 decks
9%synergy
Elvish Spirit Guide
11%inclusion1 decks9 decks
6%synergy
Seeker of Skybreak
11%inclusion1 decks9 decks
10%synergy
Bonehoard Dracosaur
11%inclusion1 decks9 decks
8%synergy
Instants
Beast Within
44%inclusion4 decks9 decks
-9%synergy
Bolt Bend
44%inclusion4 decks9 decks
37%synergy
Untimely Malfunction
33%inclusion3 decks9 decks
23%synergy
Return the Favor
33%inclusion3 decks9 decks
31%synergy
Chaos Warp
33%inclusion3 decks9 decks
-9%synergy
Valakut Awakening
33%inclusion3 decks9 decks
28%synergy
Flame Sweep
33%inclusion3 decks9 decks
33%synergy
Archdruid's Charm
22%inclusion2 decks9 decks
15%synergy
Harrow
22%inclusion2 decks9 decks
11%synergy
Gift of the Viper
22%inclusion2 decks9 decks
19%synergy
Price of Progress
22%inclusion2 decks9 decks
22%synergy
Pyroblast
22%inclusion2 decks9 decks
16%synergy
Arcbond
22%inclusion2 decks9 decks
22%synergy
Krosan Grip
22%inclusion2 decks9 decks
13%synergy
Collective Resistance
22%inclusion2 decks9 decks
12%synergy
Abrade
22%inclusion2 decks9 decks
6%synergy
Klauth's Will
22%inclusion2 decks9 decks
19%synergy
Chord of Calling
22%inclusion2 decks9 decks
18%synergy
Nature's Claim
22%inclusion2 decks9 decks
10%synergy
Noxious Revival
22%inclusion2 decks9 decks
17%synergy
Fire Magic
13%inclusion1 decks8 decks
12%synergy
Khalni Ambush
11%inclusion1 decks9 decks
6%synergy
Wild Magic Surge
11%inclusion1 decks9 decks
9%synergy
Defend the Rider
11%inclusion1 decks9 decks
8%synergy
Seething Song
11%inclusion1 decks9 decks
7%synergy
Magmaquake
11%inclusion1 decks9 decks
9%synergy
Arachnogenesis
11%inclusion1 decks9 decks
9%synergy
Moment's Peace
11%inclusion1 decks9 decks
10%synergy
Red Elemental Blast
11%inclusion1 decks9 decks
5%synergy
Starstorm
11%inclusion1 decks9 decks
6%synergy
Vampires' Vengeance
11%inclusion1 decks9 decks
11%synergy
Tyvar's Stand
11%inclusion1 decks9 decks
-1%synergy
Respite
11%inclusion1 decks9 decks
11%synergy
Tibalt's Trickery
11%inclusion1 decks9 decks
5%synergy
Kozilek's Return
11%inclusion1 decks9 decks
11%synergy
Entish Restoration
11%inclusion1 decks9 decks
1%synergy
Reclaim
11%inclusion1 decks9 decks
10%synergy
Manamorphose
11%inclusion1 decks9 decks
8%synergy
Berserk
11%inclusion1 decks9 decks
7%synergy
Spring Cleaning
11%inclusion1 decks9 decks
11%synergy
Fault Line
11%inclusion1 decks9 decks
11%synergy
Veil of Summer
11%inclusion1 decks9 decks
4%synergy
Atarka's Command
11%inclusion1 decks9 decks
10%synergy
Force of Vigor
11%inclusion1 decks9 decks
6%synergy
Smuggler's Surprise
11%inclusion1 decks9 decks
8%synergy
Tamiyo's Safekeeping
11%inclusion1 decks9 decks
-4%synergy
Flare of Duplication
11%inclusion1 decks9 decks
9%synergy
Sorceries
Stump Stomp
56%inclusion5 decks9 decks
38%synergy
Pyroclasm
44%inclusion4 decks9 decks
44%synergy
Farseek
44%inclusion4 decks9 decks
14%synergy
Shatterskull Smashing
44%inclusion4 decks9 decks
41%synergy
Blasphemous Act
44%inclusion4 decks9 decks
1%synergy
Bala Ged Recovery
44%inclusion4 decks9 decks
34%synergy
Rolling Earthquake
33%inclusion3 decks9 decks
33%synergy
Disrupt Decorum
33%inclusion3 decks9 decks
31%synergy
Ezuri's Predation
33%inclusion3 decks9 decks
27%synergy
Vandalblast
33%inclusion3 decks9 decks
15%synergy
Bridgeworks Battle
33%inclusion3 decks9 decks
23%synergy
Into the Fire
33%inclusion3 decks9 decks
33%synergy
Last March of the Ents
22%inclusion2 decks9 decks
18%synergy
Fiery Confluence
22%inclusion2 decks9 decks
21%synergy
Cave-In
22%inclusion2 decks9 decks
22%synergy
Rampant Growth
22%inclusion2 decks9 decks
-21%synergy
Chandra's Ignition
22%inclusion2 decks9 decks
11%synergy
Parallel Evolution
22%inclusion2 decks9 decks
22%synergy
Earthquake
22%inclusion2 decks9 decks
21%synergy
Wheel of Fortune
22%inclusion2 decks9 decks
19%synergy
Suplex
13%inclusion1 decks8 decks
12%synergy
Nature's Rhythm
13%inclusion1 decks8 decks
8%synergy
Molten Disaster
11%inclusion1 decks9 decks
11%synergy
Inner Fire
11%inclusion1 decks9 decks
11%synergy
Flame Rift
11%inclusion1 decks9 decks
11%synergy
Slagstorm
11%inclusion1 decks9 decks
11%synergy
Insult // Injury
11%inclusion1 decks9 decks
11%synergy
Savage Twister
11%inclusion1 decks9 decks
10%synergy
Cultivate
11%inclusion1 decks9 decks
-39%synergy
Embrace the Unknown
11%inclusion1 decks9 decks
10%synergy
Decimate
11%inclusion1 decks9 decks
-12%synergy
Boltwave
11%inclusion1 decks9 decks
11%synergy
Genesis Wave
11%inclusion1 decks9 decks
8%synergy
Rolling Temblor
11%inclusion1 decks9 decks
11%synergy
Chain Reaction
11%inclusion1 decks9 decks
2%synergy
Eldritch Evolution
11%inclusion1 decks9 decks
7%synergy
Skyshroud Claim
11%inclusion1 decks9 decks
0%synergy
Faithless Looting
11%inclusion1 decks9 decks
4%synergy
Escape to the Wilds
11%inclusion1 decks9 decks
4%synergy
Sweltering Suns
11%inclusion1 decks9 decks
10%synergy
Rite of Flame
11%inclusion1 decks9 decks
8%synergy
Life from the Loam
11%inclusion1 decks9 decks
9%synergy
Spectacular Showdown
11%inclusion1 decks9 decks
10%synergy
Glimpse the Core
11%inclusion1 decks9 decks
10%synergy
Call Forth the Tempest
11%inclusion1 decks9 decks
9%synergy
Green Sun's Zenith
11%inclusion1 decks9 decks
6%synergy
Kodama's Reach
11%inclusion1 decks9 decks
-24%synergy
Ensnared by the Mara
11%inclusion1 decks9 decks
11%synergy
Wear Down
11%inclusion1 decks9 decks
9%synergy
Turntimber Symbiosis
11%inclusion1 decks9 decks
8%synergy
Utility Artifacts
Dingus Staff
44%inclusion4 decks9 decks
44%synergy
Swiftfoot Boots
44%inclusion4 decks9 decks
11%synergy
Thornbite Staff
33%inclusion3 decks9 decks
33%synergy
Mithril Coat
22%inclusion2 decks9 decks
15%synergy
Strionic Resonator
22%inclusion2 decks9 decks
20%synergy
Gorgon's Head
11%inclusion1 decks9 decks
11%synergy
Ratchet Bomb
11%inclusion1 decks9 decks
11%synergy
Thousand-Year Elixir
11%inclusion1 decks9 decks
9%synergy
Gorgon Flail
11%inclusion1 decks9 decks
11%synergy
Engineered Explosives
11%inclusion1 decks9 decks
11%synergy
Bloodthirsty Blade
11%inclusion1 decks9 decks
11%synergy
Lithoform Engine
11%inclusion1 decks9 decks
10%synergy
Ruby Medallion
11%inclusion1 decks9 decks
8%synergy
Manifold Key
11%inclusion1 decks9 decks
11%synergy
Ankh of Mishra
11%inclusion1 decks9 decks
11%synergy
Hunter's Bow
11%inclusion1 decks9 decks
10%synergy
Shadowspear
11%inclusion1 decks9 decks
7%synergy
Enchantments
Pyrohemia
44%inclusion4 decks9 decks
44%synergy
Burgeoning
33%inclusion3 decks9 decks
30%synergy
Sylvan Library
33%inclusion3 decks9 decks
22%synergy
Carpet of Flowers
33%inclusion3 decks9 decks
30%synergy
Elephant Grass
33%inclusion3 decks9 decks
33%synergy
Master's Guidance
25%inclusion1 decks4 decks
24%synergy
Smoke
22%inclusion2 decks9 decks
22%synergy
Vicious Shadows
22%inclusion2 decks9 decks
22%synergy
Fertile Ground
22%inclusion2 decks9 decks
19%synergy
Aggravated Assault
22%inclusion2 decks9 decks
12%synergy
Primal Vigor
22%inclusion2 decks9 decks
18%synergy
Exploration
22%inclusion2 decks9 decks
15%synergy
Cindervines
22%inclusion2 decks9 decks
18%synergy
Rhythm of the Wild
22%inclusion2 decks9 decks
-17%synergy
Pain for All
13%inclusion1 decks8 decks
9%synergy
Garruk's Uprising
11%inclusion1 decks9 decks
-26%synergy
Roiling Vortex
11%inclusion1 decks9 decks
11%synergy
Guardian Project
11%inclusion1 decks9 decks
-2%synergy
Primal Order
11%inclusion1 decks9 decks
11%synergy
Instill Energy
11%inclusion1 decks9 decks
10%synergy
Omenpath Journey
11%inclusion1 decks9 decks
9%synergy
Curse of Opulence
11%inclusion1 decks9 decks
8%synergy
Prismatic Omen
11%inclusion1 decks9 decks
11%synergy
Seal of Primordium
11%inclusion1 decks9 decks
11%synergy
Burning Sands
11%inclusion1 decks9 decks
11%synergy
Compost
11%inclusion1 decks9 decks
11%synergy
The Elder Dragon War
11%inclusion1 decks9 decks
11%synergy
Song of the Dryads
11%inclusion1 decks9 decks
8%synergy
Colossal Majesty
11%inclusion1 decks9 decks
3%synergy
Quest for Renewal
11%inclusion1 decks9 decks
10%synergy
Oath of Druids
11%inclusion1 decks9 decks
11%synergy
Elemental Bond
11%inclusion1 decks9 decks
1%synergy
Artist's Talent
11%inclusion1 decks9 decks
10%synergy
Court of Ire
11%inclusion1 decks9 decks
10%synergy
Spelunking
11%inclusion1 decks9 decks
7%synergy
Living Plane
11%inclusion1 decks9 decks
11%synergy
Dictate of the Twin Gods
11%inclusion1 decks9 decks
9%synergy
Bear Umbra
11%inclusion1 decks9 decks
1%synergy
Fiery Emancipation
11%inclusion1 decks9 decks
3%synergy
Kenrith's Transformation
11%inclusion1 decks9 decks
4%synergy
Valakut Exploration
11%inclusion1 decks9 decks
6%synergy
Well Rested
11%inclusion1 decks9 decks
8%synergy
Battles
Invasion of Tarkir
11%inclusion1 decks9 decks
11%synergy
Invasion of Ikoria
11%inclusion1 decks9 decks
7%synergy
Invasion of Karsus
11%inclusion1 decks9 decks
11%synergy
Planeswalkers
Tezzeret, Cruel Captain
25%inclusion2 decks8 decks
24%synergy
Wrenn and Six
11%inclusion1 decks9 decks
10%synergy
Utility Lands
Boseiju, Who Endures
78%inclusion7 decks9 decks
58%synergy
Yavimaya, Cradle of Growth
67%inclusion6 decks9 decks
47%synergy
Reliquary Tower
44%inclusion4 decks9 decks
18%synergy
Arena of Glory
44%inclusion4 decks9 decks
35%synergy
Shifting Woodland
44%inclusion4 decks9 decks
38%synergy
Kessig Wolf Run
44%inclusion4 decks9 decks
6%synergy
Maze of Ith
22%inclusion2 decks9 decks
20%synergy
Yavimaya Hollow
22%inclusion2 decks9 decks
21%synergy
Scavenger Grounds
22%inclusion2 decks9 decks
18%synergy
Urza's Saga
22%inclusion2 decks9 decks
18%synergy
Emergence Zone
22%inclusion2 decks9 decks
20%synergy
Multiversal Passage
13%inclusion1 decks8 decks
12%synergy
Pit of Offerings
11%inclusion1 decks9 decks
10%synergy
Wasteland
11%inclusion1 decks9 decks
10%synergy
Valakut, the Molten Pinnacle
11%inclusion1 decks9 decks
9%synergy
Treasure Vault
11%inclusion1 decks9 decks
8%synergy
Vesuva
11%inclusion1 decks9 decks
10%synergy
Nykthos, Shrine to Nyx
11%inclusion1 decks9 decks
8%synergy
Homeward Path
11%inclusion1 decks9 decks
10%synergy
Mosswort Bridge
11%inclusion1 decks9 decks
-15%synergy
Thespian's Stage
11%inclusion1 decks9 decks
9%synergy
Dark Depths
11%inclusion1 decks9 decks
10%synergy
Strip Mine
11%inclusion1 decks9 decks
8%synergy
Arcane Lighthouse
11%inclusion1 decks9 decks
10%synergy
Skarrg, the Rage Pits
11%inclusion1 decks9 decks
0%synergy
Castle Garenbrig
11%inclusion1 decks9 decks
2%synergy
Barbarian Ring
11%inclusion1 decks9 decks
11%synergy
Mana Artifacts
Sol Ring
89%inclusion8 decks9 decks
11%synergy
Arcane Signet
78%inclusion7 decks9 decks
17%synergy
Thought Vessel
56%inclusion5 decks9 decks
45%synergy
Talisman of Impulse
44%inclusion4 decks9 decks
24%synergy
Gruul Signet
22%inclusion2 decks9 decks
-2%synergy
Herd Heirloom
13%inclusion1 decks8 decks
6%synergy
Lotus Petal
11%inclusion1 decks9 decks
7%synergy
Fellwar Stone
11%inclusion1 decks9 decks
2%synergy
Mind Stone
11%inclusion1 decks9 decks
5%synergy
Patriar's Seal
11%inclusion1 decks9 decks
9%synergy
Victory Chimes
11%inclusion1 decks9 decks
11%synergy
Liquimetal Torque
11%inclusion1 decks9 decks
7%synergy
Lands
Command Tower
100%inclusion9 decks9 decks
17%synergy
Stomping Ground
100%inclusion9 decks9 decks
53%synergy
Wooded Foothills
100%inclusion9 decks9 decks
69%synergy
Mountain
89%inclusion8 decks9 decks
-8%synergy
Forest
89%inclusion8 decks9 decks
-9%synergy
Taiga
89%inclusion8 decks9 decks
76%synergy
Karplusan Forest
78%inclusion7 decks9 decks
39%synergy
Prismatic Vista
67%inclusion6 decks9 decks
60%synergy
Spire Garden
67%inclusion6 decks9 decks
31%synergy
Windswept Heath
56%inclusion5 decks9 decks
46%synergy
Scalding Tarn
56%inclusion5 decks9 decks
49%synergy
Cinder Glade
56%inclusion5 decks9 decks
-13%synergy
Arid Mesa
56%inclusion5 decks9 decks
48%synergy
Bloodstained Mire
56%inclusion5 decks9 decks
48%synergy
Rockfall Vale
56%inclusion5 decks9 decks
12%synergy
Stump Stomp
56%inclusion5 decks9 decks
38%synergy
Misty Rainforest
44%inclusion4 decks9 decks
36%synergy
Grove of the Burnwillows
44%inclusion4 decks9 decks
36%synergy
Fabled Passage
44%inclusion4 decks9 decks
31%synergy
Shatterskull Smashing
44%inclusion4 decks9 decks
41%synergy
Rootbound Crag
44%inclusion4 decks9 decks
-10%synergy
Commercial District
44%inclusion4 decks9 decks
26%synergy
Forbidden Orchard
44%inclusion4 decks9 decks
43%synergy
Bala Ged Recovery
44%inclusion4 decks9 decks
34%synergy
Verdant Catacombs
33%inclusion3 decks9 decks
25%synergy
Gruul Turf
33%inclusion3 decks9 decks
-5%synergy
Valakut Awakening
33%inclusion3 decks9 decks
28%synergy
Bridgeworks Battle
33%inclusion3 decks9 decks
23%synergy
Fire-Lit Thicket
33%inclusion3 decks9 decks
18%synergy
Thornspire Verge
33%inclusion3 decks9 decks
10%synergy
Talon Gates of Madara
22%inclusion2 decks9 decks
20%synergy
Snow-Covered Mountain
22%inclusion2 decks9 decks
18%synergy
Temple of Abandon
22%inclusion2 decks9 decks
-10%synergy
Snow-Covered Forest
22%inclusion2 decks9 decks
18%synergy
Gemstone Caverns
22%inclusion2 decks9 decks
18%synergy
Sheltered Thicket
22%inclusion2 decks9 decks
0%synergy
Pinnacle Monk
22%inclusion2 decks9 decks
18%synergy
Cragcrown Pathway
22%inclusion2 decks9 decks
1%synergy
Cavern of Souls
22%inclusion2 decks9 decks
16%synergy
Mana Confluence
22%inclusion2 decks9 decks
19%synergy
Starting Town
13%inclusion1 decks8 decks
11%synergy
Mossfire Valley
11%inclusion1 decks9 decks
-21%synergy
Khalni Ambush
11%inclusion1 decks9 decks
6%synergy
Reflecting Pool
11%inclusion1 decks9 decks
9%synergy
Game Trail
11%inclusion1 decks9 decks
-35%synergy
Myriad Landscape
11%inclusion1 decks9 decks
-6%synergy
Exotic Orchard
11%inclusion1 decks9 decks
-14%synergy
Urza's Cave
11%inclusion1 decks9 decks
9%synergy
Horizon of Progress
11%inclusion1 decks9 decks
10%synergy
Plaza of Heroes
11%inclusion1 decks9 decks
9%synergy