Pugnacious Hammerskull (Card)
Pugnacious Hammerskull
In 15147 decks
1% of 1666012 decks
Nov 8, 2023
The Lost Caverns of Ixalan Set Review - Green
Grow yourself a new Colossal Dreadmaw with the latest green cards from The Lost Caverns of Ixalan.
Pantlaza, Sun-Favored
28.40% of 17707 decks
5028 decks
The Gitrog, Ravenous Ride
63.53% of 4736 decks
3009 decks
Gishath, Sun's Avatar
9.86% of 19316 decks
1905 decks
Ghalta, Primal Hunger
22.15% of 5224 decks
1157 decks
Owen Grady, Raptor Trainer // Blue, Loyal Raptor
29.95% of 2998 decks
898 decks
Selvala, Heart of the Wilds
14.26% of 5029 decks
717 decks
Atla Palani, Nest Tender
2.34% of 15406 decks
360 decks
Huatli, Poet of Unity
25.37% of 1092 decks
277 decks
Indoraptor, the Perfect Hybrid
4.35% of 4437 decks
193 decks
Zacama, Primal Calamity
4.63% of 3888 decks
180 decks
Ghalta, Stampede Tyrant
11.00% of 882 decks
97 decks
Etali, Primal Conqueror
0.99% of 8746 decks
87 decks
Wayta, Trainer Prodigy
2.39% of 3432 decks
82 decks
Ziatora, the Incinerator
0.89% of 8100 decks
72 decks
Itzquinth, Firstborn of Gishath
43.21% of 162 decks
70 decks
Ghalta and Mavren
2.53% of 2375 decks
60 decks
Zilortha, Strength Incarnate
2.28% of 2152 decks
49 decks
Morophon, the Boundless
0.45% of 9963 decks
45 decks
New Cards
Armasaur Guide
98% of 55 decks
+89% synergy
Quick-Draw Katana
89% of 9 decks
+55% synergy
Leyline of Mutation
75% of 4 decks
+59% synergy
Quakestrider Ceratops
68% of 673 decks
+62% synergy
Cackling Prowler
59% of 17 decks
+39% synergy
High Synergy Cards
Daemogoth Titan
82% of 3629 decks
+80% synergy
Yargle and Multani
78% of 3629 decks
+75% synergy
Shakedown Heavy
73% of 3629 decks
+73% synergy
Cresting Mosasaurus
73% of 1225 decks
+73% synergy
Hunted Bonebrute
71% of 3312 decks
+70% synergy
Zacama, Primal Calamity
77% of 7984 decks
+68% synergy
Etali, Primal Storm
76% of 9544 decks
+67% synergy
Rotting Regisaur
67% of 3629 decks
+67% synergy
Regisaur Alpha
69% of 9544 decks
+66% synergy
Wakening Sun's Avatar
64% of 8143 decks
+63% synergy
Top Cards
Ghalta, Primal Hunger
64% of 15147 decks
+59% synergy
Assassin's Trophy
63% of 3629 decks
+33% synergy
Daemogoth Woe-Eater
63% of 3629 decks
+62% synergy
Gishath, Sun's Avatar
63% of 7984 decks
+59% synergy
Rhythm of the Wild
62% of 9544 decks
+39% synergy
Honest Rutstein
62% of 3086 decks
+54% synergy
Quartzwood Crasher
62% of 9544 decks
+57% synergy
Temple Altisaur
60% of 8143 decks
+58% synergy
Hulking Raptor
60% of 13849 decks
+57% synergy
Cultivate
60% of 15147 decks
+14% synergy
Creatures
Wrathful Raptors
59% of 9458 decks
+57% synergy
Trumpeting Carnosaur
58% of 9490 decks
+55% synergy
Ghalta and Mavren
58% of 8143 decks
+52% synergy
Kinjalli's Sunwing
58% of 8143 decks
+57% synergy
Topiary Stomper
58% of 15147 decks
+54% synergy
Bronzebeak Foragers
56% of 8064 decks
+55% synergy
Otepec Huntmaster
56% of 9544 decks
+54% synergy
Wayward Swordtooth
56% of 15147 decks
+52% synergy
Yargle, Glutton of Urborg
54% of 3629 decks
+53% synergy
Zetalpa, Primal Dawn
54% of 8143 decks
+51% synergy
Earthshaker Dreadmaw
53% of 15147 decks
+51% synergy
Palani's Hatcher
53% of 9544 decks
+49% synergy
Etali, Primal Conqueror
52% of 9544 decks
+40% synergy
Bonehoard Dracosaur
49% of 9544 decks
+46% synergy
Nezahal, Primal Tide
49% of 1255 decks
+46% synergy
Needletooth Pack
49% of 134 decks
+44% synergy
Iridescent Vinelasher
48% of 1017 decks
+46% synergy
Thrashing Brontodon
48% of 15147 decks
+46% synergy
Ob Nixilis, the Fallen
48% of 3629 decks
+47% synergy
Marauding Raptor
45% of 9544 decks
+44% synergy
Itzquinth, Firstborn of Gishath
45% of 9458 decks
+42% synergy
Scytheclaw Raptor
44% of 9544 decks
+41% synergy
Ghalta, Stampede Tyrant
42% of 15147 decks
+37% synergy
Curious Altisaur
42% of 14761 decks
+39% synergy
Hunting Velociraptor
41% of 9544 decks
+39% synergy
Atzocan Seer
40% of 8143 decks
+38% synergy
Belligerent Yearling
40% of 9544 decks
+39% synergy
Hunted Horror
39% of 3629 decks
+38% synergy
Jarad, Golgari Lich Lord
38% of 3629 decks
+35% synergy
Indominus Rex, Alpha
38% of 173 decks
+37% synergy
Sunfrill Imitator
37% of 14761 decks
+35% synergy
Fanatic of Rhonas
36% of 5659 decks
+27% synergy
Scion of Calamity
35% of 14761 decks
+33% synergy
Apex Altisaur
35% of 15147 decks
+32% synergy
Ravenous Tyrannosaurus
31% of 9544 decks
+29% synergy
Sawhorn Nemesis
31% of 2269 decks
+30% synergy
Kogla and Yidaro
30% of 9544 decks
+25% synergy
Ripjaw Raptor
30% of 15147 decks
+28% synergy
Regal Behemoth
30% of 15147 decks
+28% synergy
Runic Armasaur
30% of 15147 decks
+28% synergy
Vaultborn Tyrant
29% of 8633 decks
+27% synergy
Huatli, Poet of Unity
29% of 7984 decks
+27% synergy
Keruga, the Macrosage
28% of 1255 decks
+27% synergy
Dinosaurs on a Spaceship
28% of 7984 decks
+25% synergy
Ixalli's Lorekeeper
27% of 15147 decks
+26% synergy
Ignoble Hierarch
27% of 413 decks
+1% synergy
Elves of Deep Shadow
27% of 3629 decks
+16% synergy
Llanowar Elves
27% of 15147 decks
+6% synergy
Verdant Sun's Avatar
26% of 15147 decks
+24% synergy
Kinjalli's Caller
26% of 8143 decks
+25% synergy
Instants
Path to Exile
58% of 8143 decks
+12% synergy
Akroma's Will
50% of 8143 decks
+41% synergy
Swords to Plowshares
44% of 8143 decks
-19% synergy
Return of the Wildspeaker
44% of 15147 decks
+30% synergy
Revitalizing Repast
41% of 1619 decks
+29% synergy
Generous Gift
38% of 8143 decks
+13% synergy
Heroic Intervention
38% of 15147 decks
+9% synergy
Counterspell
37% of 1255 decks
-6% synergy
Beast Within
35% of 15147 decks
-3% synergy
Tear Asunder
31% of 3629 decks
+25% synergy
Malakir Rebirth
29% of 3629 decks
+21% synergy
Putrefy
24% of 3629 decks
+9% synergy
Not Dead After All
24% of 3629 decks
+20% synergy
Permission Denied
23% of 166 decks
+20% synergy
Ephemerate
22% of 8143 decks
+16% synergy
Negate
21% of 1255 decks
-2% synergy
Growth Spiral
20% of 1255 decks
-2% synergy
Boros Charm
19% of 7984 decks
-6% synergy
Mutational Advantage
18% of 600 decks
+13% synergy
Horrid Vigor
18% of 1168 decks
+15% synergy
Infernal Grasp
18% of 3629 decks
+10% synergy
Smuggler's Surprise
18% of 7627 decks
+14% synergy
Dark Ritual
17% of 3629 decks
-5% synergy
Dawn's Truce
17% of 1167 decks
+1% synergy
Repulsive Mutation
16% of 658 decks
+12% synergy
Abrupt Decay
16% of 3629 decks
+5% synergy
Supernatural Stamina
15% of 3629 decks
+13% synergy
Deadly Rollick
14% of 3629 decks
+3% synergy
Cyclonic Rift
14% of 1255 decks
-14% synergy
Chaos Warp
14% of 9544 decks
-18% synergy
Get Lost
13% of 8143 decks
+10% synergy
Entish Restoration
13% of 15147 decks
+5% synergy
Fell the Profane
13% of 1619 decks
+1% synergy
Feign Death
13% of 3629 decks
+10% synergy
Untimely Malfunction
12% of 564 decks
-3% synergy
Teferi's Protection
12% of 8143 decks
-8% synergy
Worldly Tutor
12% of 15147 decks
-2% synergy
Archdruid's Charm
12% of 9343 decks
+5% synergy
Parting Gust
12% of 1229 decks
+8% synergy
Tamiyo's Safekeeping
11% of 15147 decks
+4% synergy
Flawless Maneuver
11% of 8143 decks
+1% synergy
Fierce Guardianship
11% of 1255 decks
-7% synergy
Deflecting Swat
10% of 9544 decks
-6% synergy
Undying Malice
10% of 3629 decks
+8% synergy
Tyvar's Stand
10% of 15147 decks
+5% synergy
Terminate
10% of 413 decks
-11% synergy
Gift of the Viper
10% of 4455 decks
+6% synergy
Nature's Claim
10% of 15147 decks
+1% synergy
Withering Torment
10% of 558 decks
-9% synergy
Ram Through
10% of 15147 decks
+6% synergy
Sorceries
Rampant Growth
51% of 15147 decks
+17% synergy
Farseek
50% of 15147 decks
+16% synergy
Nature's Lore
37% of 15147 decks
+5% synergy
Rishkar's Expertise
37% of 15147 decks
+27% synergy
Toxic Deluge
37% of 3629 decks
+19% synergy
Kodama's Reach
36% of 15147 decks
+5% synergy
Reanimate
32% of 3629 decks
+17% synergy
Blasphemous Act
29% of 9544 decks
-5% synergy
Chandra's Ignition
27% of 9544 decks
+23% synergy
Three Visits
27% of 15147 decks
+2% synergy
Culling Ritual
26% of 3629 decks
+15% synergy
Exsanguinate
24% of 3629 decks
+18% synergy
Thunderherd Migration
21% of 15147 decks
+20% synergy
Savage Order
21% of 14833 decks
+20% synergy
Blasphemous Edict
18% of 207 decks
-15% synergy
Torment of Hailfire
18% of 3629 decks
+13% synergy
Feed the Swarm
15% of 3629 decks
-3% synergy
Savage Stomp
15% of 15147 decks
+14% synergy
Triumphant Chomp
15% of 9490 decks
+15% synergy
Migration Path
14% of 15147 decks
+11% synergy
Last March of the Ents
14% of 15147 decks
+9% synergy
Mandate of Abaddon
14% of 3629 decks
+13% synergy
Felling Blow
13% of 134 decks
+0% synergy
Stump Stomp
13% of 3113 decks
+4% synergy
Bridgeworks Battle
13% of 5949 decks
+7% synergy
Finale of Devastation
13% of 15147 decks
+5% synergy
Overwhelming Stampede
12% of 15147 decks
+6% synergy
Monstrous Emergence
12% of 989 decks
+8% synergy
Skyshroud Claim
12% of 15147 decks
+2% synergy
Victimize
11% of 3629 decks
-0% synergy
Season of Gathering
11% of 3135 decks
+6% synergy
Contest of Claws
10% of 14833 decks
+9% synergy
Pillage the Bog
10% of 2631 decks
+9% synergy
Genesis Ultimatum
10% of 1070 decks
+5% synergy
Don't Move
10% of 8143 decks
+9% synergy
In Garruk's Wake
9% of 3629 decks
+6% synergy
Demonic Tutor
9% of 3629 decks
-13% synergy
Bala Ged Recovery
9% of 15147 decks
+0% synergy
Fiery Confluence
9% of 9544 decks
+6% synergy
Traverse the Outlands
7% of 15147 decks
+5% synergy
Preposterous Proportions
7% of 751 decks
+0% synergy
Austere Command
7% of 8143 decks
-6% synergy
Rise of the Witch-king
7% of 3629 decks
+1% synergy
Life's Legacy
7% of 15147 decks
+5% synergy
Commune with Dinosaurs
7% of 15147 decks
+7% synergy
Raise the Palisade
7% of 1255 decks
+3% synergy
Farewell
7% of 8143 decks
-7% synergy
Damnation
7% of 3629 decks
-1% synergy
Explore
6% of 15147 decks
-3% synergy
Rise of the Dark Realms
6% of 3629 decks
+3% synergy
Utility Artifacts
The Skullspore Nexus
45% of 15147 decks
+41% synergy
Agent's Toolkit
35% of 1255 decks
+34% synergy
Fist of Suns
24% of 104 decks
+17% synergy
The Great Henge
22% of 15147 decks
+13% synergy
Swiftfoot Boots
21% of 15147 decks
-7% synergy
Lightning Greaves
19% of 15147 decks
-6% synergy
Monster Manual
17% of 15147 decks
+15% synergy
Herald's Horn
15% of 15147 decks
+8% synergy
Urza's Incubator
13% of 15147 decks
+10% synergy
Blackblade Reforged
11% of 15147 decks
+7% synergy
Dino DNA
9% of 15147 decks
+9% synergy
Banner of Kinship
9% of 751 decks
-4% synergy
Brotherhood Regalia
8% of 3693 decks
+4% synergy
Lifecrafter's Bestiary
8% of 15147 decks
+4% synergy
Excalibur, Sword of Eden
8% of 3693 decks
+5% synergy
Chimil, the Inner Sun
7% of 15147 decks
+5% synergy
Amulet of Vigor
7% of 15147 decks
+6% synergy
Emerald Medallion
7% of 15147 decks
+5% synergy
Tangleweave Armor
6% of 15147 decks
+5% synergy
Altar of the Wretched
6% of 3565 decks
+5% synergy
Whispersilk Cloak
5% of 15147 decks
+2% synergy
Enchantments
Garruk's Uprising
58% of 15147 decks
+43% synergy
Retreat to Hagra
48% of 3629 decks
+47% synergy
Leyline of the Guildpact
30% of 40 decks
+7% synergy
Poetic Ingenuity
27% of 9544 decks
+26% synergy
Temur Ascendancy
27% of 1070 decks
+12% synergy
Monstrous Vortex
24% of 5139 decks
+21% synergy
Unnatural Growth
23% of 15147 decks
+18% synergy
Welcome to . . .
22% of 14761 decks
+20% synergy
Spelunking
21% of 15147 decks
+16% synergy
Descendants' Path
21% of 15147 decks
+19% synergy
Kindred Discovery
20% of 1255 decks
+12% synergy
Reflections of Littjara
19% of 1255 decks
+14% synergy
Growing Rites of Itlimoc
18% of 15147 decks
+12% synergy
From the Rubble
17% of 8064 decks
+17% synergy
Derelict Attic // Widow's Walk
16% of 374 decks
+12% synergy
Elemental Bond
15% of 15147 decks
+10% synergy
Up the Beanstalk
14% of 15147 decks
+10% synergy
Mirari's Wake
14% of 8143 decks
-0% synergy
Annie Joins Up
13% of 2952 decks
-5% synergy
Journey to Eternity
13% of 3629 decks
+10% synergy
Greater Good
13% of 15147 decks
+8% synergy
Valkyrie's Call
13% of 279 decks
+9% synergy
Wild Growth
12% of 15147 decks
+1% synergy
Rhystic Study
12% of 1255 decks
-16% synergy
Utopia Sprawl
12% of 15147 decks
+4% synergy
Smothering Tithe
11% of 8143 decks
-13% synergy
Oversold Cemetery
11% of 3629 decks
+9% synergy
Riveteers Ascendancy
11% of 413 decks
+7% synergy
Animate Dead
11% of 3629 decks
+1% synergy
Phyrexian Reclamation
10% of 3629 decks
+7% synergy
Thickest in the Thicket
10% of 2228 decks
+7% synergy
Guardian Project
10% of 15147 decks
+1% synergy
Colossal Majesty
9% of 15147 decks
+6% synergy
Sneak Attack
9% of 9544 decks
+6% synergy
Warstorm Surge
9% of 9544 decks
+4% synergy
Tribute to the World Tree
8% of 15147 decks
+0% synergy
Leyline of Transformation
8% of 121 decks
+5% synergy
Sylvan Library
8% of 15147 decks
-3% synergy
Kaya's Ghostform
7% of 3629 decks
+3% synergy
Quest for the Necropolis
7% of 1314 decks
+7% synergy
Dazzling Theater // Prop Room
7% of 334 decks
-11% synergy
Teleportation Circle
7% of 8143 decks
+3% synergy
Lurking Predators
6% of 15147 decks
+5% synergy
Retreat to Kazandu
6% of 15147 decks
+4% synergy
Shadow in the Warp
6% of 9544 decks
+2% synergy
The Meathook Massacre
6% of 3629 decks
+1% synergy
Defense of the Heart
6% of 15147 decks
+3% synergy
Kenrith's Transformation
6% of 15147 decks
-1% synergy
Meathook Massacre II
6% of 612 decks
+2% synergy
Virtue of Persistence
5% of 3629 decks
+2% synergy
Battles
Invasion of Ikoria
17% of 15147 decks
+13% synergy
Planeswalkers
Nissa of Shadowed Boughs
29% of 3629 decks
+27% synergy
Kiora, Behemoth Beckoner
11% of 1255 decks
+8% synergy
Garruk, Primal Hunter
7% of 15147 decks
+4% synergy
Huatli, Warrior Poet
6% of 7984 decks
+5% synergy
Utility Lands
Rogue's Passage
46% of 15147 decks
+26% synergy
Bojuka Bog
39% of 3629 decks
+9% synergy
Mosswort Bridge
37% of 15147 decks
+27% synergy
Kessig Wolf Run
34% of 9544 decks
+18% synergy
Reliquary Tower
31% of 15147 decks
+2% synergy
Restless Ridgeline
27% of 9544 decks
+24% synergy
Shizo, Death's Storehouse
22% of 3629 decks
+17% synergy
Temple of the False God
19% of 15147 decks
+9% synergy
Yavimaya, Cradle of Growth
18% of 15147 decks
+8% synergy
Takenuma, Abandoned Mire
17% of 3629 decks
+7% synergy
Boseiju, Who Endures
16% of 15147 decks
-4% synergy
Three Tree City
14% of 3465 decks
+4% synergy
Castle Garenbrig
13% of 15147 decks
+8% synergy
Hidden Cataract
13% of 1255 decks
+12% synergy
Shifting Woodland
12% of 5949 decks
+2% synergy
Restless Vents
11% of 413 decks
+8% synergy
The Black Gate
11% of 3629 decks
+7% synergy
Cabal Coffers
11% of 3629 decks
-0% synergy
Hidden Volcano
9% of 9544 decks
+7% synergy
Restless Cottage
8% of 3629 decks
+4% synergy
Restless Prairie
8% of 8143 decks
+6% synergy
Restless Reef
8% of 173 decks
+4% synergy
Arch of Orazca
8% of 15147 decks
+7% synergy
Hidden Nursery
8% of 15147 decks
+6% synergy
Hidden Courtyard
8% of 8143 decks
+6% synergy
Arena of Glory
7% of 2866 decks
-2% synergy
Cactus Preserve
7% of 6162 decks
+6% synergy
Ancient Tomb
7% of 15147 decks
-4% synergy
Urborg, Tomb of Yawgmoth
6% of 15147 decks
-3% synergy
Nykthos, Shrine to Nyx
6% of 15147 decks
+1% synergy
Otawara, Soaring City
6% of 1255 decks
-11% synergy
Memorial to Folly
6% of 3629 decks
+5% synergy
Mortuary Mire
6% of 3629 decks
+1% synergy
Restless Anchorage
6% of 170 decks
+3% synergy
Field of the Dead
6% of 15147 decks
+2% synergy
Mana Artifacts
Sol Ring
86% of 15147 decks
+2% synergy
Arcane Signet
67% of 15147 decks
-5% synergy
Talisman of Resilience
20% of 3629 decks
+8% synergy
Patchwork Banner
17% of 2577 decks
+7% synergy
Thought Vessel
16% of 15147 decks
-0% synergy
Golgari Signet
16% of 3629 decks
+3% synergy
Progenitor's Icon
13% of 14761 decks
+13% synergy
Simic Signet
13% of 1255 decks
-1% synergy
Gruul Signet
9% of 9544 decks
-3% synergy
Timeless Lotus
9% of 104 decks
-5% synergy
Commander's Sphere
8% of 15147 decks
-7% synergy
Izzet Signet
8% of 1070 decks
-20% synergy
Talisman of Curiosity
7% of 1255 decks
-6% synergy
Fellwar Stone
7% of 15147 decks
-14% synergy
Chromatic Lantern
6% of 15147 decks
-3% synergy
Rakdos Signet
6% of 413 decks
-23% synergy
Talisman of Creativity
6% of 1070 decks
-23% synergy
Selesnya Signet
6% of 8143 decks
-3% synergy
Boros Signet
5% of 7984 decks
-18% synergy
Talisman of Indulgence
5% of 413 decks
-21% synergy
Lands
Command Tower
79% of 15147 decks
+5% synergy
Woodland Cemetery
64% of 3629 decks
+36% synergy
Jungle Shrine
63% of 7984 decks
+31% synergy
Canopy Vista
61% of 8143 decks
+25% synergy
Cinder Glade
60% of 9544 decks
+22% synergy
Clifftop Retreat
57% of 7984 decks
+28% synergy
Llanowar Wastes
57% of 3629 decks
+31% synergy
Golgari Rot Farm
49% of 3629 decks
+31% synergy
Overgrown Tomb
47% of 3629 decks
+5% synergy
Tainted Wood
44% of 3629 decks
+31% synergy
Path of Ancestry
43% of 15147 decks
+22% synergy
Frontier Bivouac
43% of 1070 decks
+16% synergy
Undergrowth Stadium
43% of 3629 decks
+17% synergy
Necroblossom Snarl
42% of 3629 decks
+30% synergy
Exotic Orchard
41% of 15147 decks
+6% synergy
Fortified Village
39% of 8143 decks
+24% synergy
Game Trail
38% of 9544 decks
+22% synergy
Hushwood Verge
37% of 674 decks
+17% synergy
Ketria Triome
36% of 1070 decks
+4% synergy
Furycalm Snarl
35% of 7984 decks
+22% synergy
Thornspire Verge
35% of 811 decks
+17% synergy
Stomping Ground
34% of 9544 decks
-7% synergy
Jetmir's Garden
34% of 7984 decks
+1% synergy
Twilight Mire
34% of 3629 decks
+24% synergy
Ziatora's Proving Ground
33% of 413 decks
+2% synergy
Unclaimed Territory
33% of 15147 decks
+28% synergy
Underground Mortuary
33% of 3334 decks
+16% synergy
Bountiful Landscape
32% of 354 decks
+17% synergy
Temple Garden
32% of 8143 decks
-8% synergy
Hinterland Harbor
31% of 1255 decks
+4% synergy
Deathcap Glade
31% of 3629 decks
+17% synergy
Twisted Landscape
31% of 129 decks
+11% synergy
Secluded Courtyard
31% of 15147 decks
+26% synergy
Rootbound Crag
30% of 9544 decks
+6% synergy
Smoldering Marsh
30% of 413 decks
-3% synergy
Rejuvenating Springs
29% of 1255 decks
+0% synergy
Savage Lands
28% of 413 decks
+5% synergy
Sacred Foundry
28% of 7984 decks
-8% synergy
Breeding Pool
28% of 1255 decks
-13% synergy
Steam Vents
27% of 1070 decks
-12% synergy
Tranquil Landscape
27% of 44 decks
+11% synergy
Blood Crypt
27% of 413 decks
-12% synergy
Sulfur Falls
27% of 1070 decks
-4% synergy
Rockfall Vale
26% of 9544 decks
+4% synergy
Temple of Malady
26% of 3629 decks
+10% synergy
Dreamroot Cascade
26% of 1255 decks
+7% synergy
Sheltering Landscape
26% of 2331 decks
+13% synergy
Dragonskull Summit
26% of 413 decks
-5% synergy
Cavern of Souls
25% of 15147 decks
+18% synergy
Evolving Wilds
25% of 15147 decks
+4% synergy