Righteous Aura (Card)
Righteous Aura
In 3876 decks
0% of 1788035 decks
Oct 26, 2021
Power Sink - Lifestyles of the Rich and Famous
Tired of the same ol' Zur? Lenny has a new direction for the enchanting Enchanter!
Apr 26, 2021
How They Brew It - Protection From Yourself
There's nothing quite like Ghen, Arcanum Weaver EDH, and no one quite like Michael Celani to guide you through the brew.
Top Commanders (5)
Verrak, Warped Sengir
28.18% of 887 decks
250 decks
Mangara, the Diplomat
11.11% of 693 decks
77 decks
Queen Marchesa
7.35% of 11204 decks
824 decks
Sythis, Harvest's Hand
6.29% of 11067 decks
696 decks
Oloro, Ageless Ascetic
1.10% of 11050 decks
121 decks
New Cards (5)
Struggle for Project Purity
39% of 23 decks
+35% synergy
Kambal, Profiteering Mayor
35% of 31 decks
+32% synergy
Caesar, Legion's Emperor
33% of 30 decks
+32% synergy
Return the Favor
30% of 10 decks
+25% synergy
Lush Portico
27% of 55 decks
+23% synergy
High Synergy Cards (10)
Sanctum Weaver
67% of 1196 decks
+64% synergy
Enchantress's Presence
65% of 1232 decks
+63% synergy
Sterling Grove
64% of 1232 decks
+62% synergy
Deflecting Palm
61% of 1218 decks
+59% synergy
Wild Growth
62% of 1233 decks
+56% synergy
Fertile Ground
58% of 1233 decks
+56% synergy
Destiny Spinner
58% of 1212 decks
+55% synergy
Eidolon of Blossoms
57% of 1229 decks
+55% synergy
Setessan Champion
57% of 1212 decks
+55% synergy
Satyr Enchanter
52% of 1222 decks
+51% synergy
Top Cards (10)
Swords to Plowshares
64% of 3874 decks
+36% synergy
Kenrith's Transformation
54% of 1214 decks
+51% synergy
Ghostly Prison
51% of 3859 decks
+46% synergy
Jukai Naturalist
50% of 1052 decks
+49% synergy
Kardur, Doomscourge
50% of 963 decks
+49% synergy
Rakdos Charm
50% of 1003 decks
+47% synergy
Ruinous Ultimatum
49% of 991 decks
+47% synergy
Boros Charm
47% of 1218 decks
+42% synergy
Crackling Doom
47% of 1003 decks
+46% synergy
Disrupt Decorum
47% of 1211 decks
+45% synergy
Creatures (50)
Kambal, Consul of Allocation
46% of 2009 decks
+45% synergy
Verduran Enchantress
45% of 1233 decks
+44% synergy
Brash Taunter
45% of 1191 decks
+43% synergy
Xantcha, Sleeper Agent
43% of 1000 decks
+43% synergy
Skyline Despot
39% of 1214 decks
+38% synergy
Gisela, Blade of Goldnight
35% of 1218 decks
+34% synergy
Emberwilde Captain
34% of 1172 decks
+33% synergy
Karazikar, the Eye Tyrant
32% of 917 decks
+32% synergy
Dryad of the Ilysian Grove
32% of 1212 decks
+28% synergy
Courser of Kruphix
31% of 1229 decks
+29% synergy
Argothian Enchantress
25% of 1233 decks
+25% synergy
Royal Assassin
25% of 2020 decks
+25% synergy
Pippin, Warden of Isengard
25% of 96 decks
+24% synergy
Composer of Spring
25% of 300 decks
+24% synergy
Herald of the Pantheon
25% of 1228 decks
+24% synergy
Geode Rager
25% of 1189 decks
+24% synergy
Yenna, Redtooth Regent
25% of 222 decks
+24% synergy
Mesa Enchantress
23% of 3859 decks
+21% synergy
Treasure Dredger
23% of 31 decks
+22% synergy
Breena, the Demagogue
22% of 1929 decks
+21% synergy
Weaver of Harmony
21% of 1068 decks
+20% synergy
Nelly Borca, Impulsive Accuser
21% of 123 decks
+20% synergy
Windborn Muse
21% of 3869 decks
+19% synergy
Calix, Guided by Fate
21% of 420 decks
+20% synergy
Vito, Thorn of the Dusk Rose
20% of 1976 decks
+17% synergy
Kazuul, Tyrant of the Cliffs
20% of 1218 decks
+19% synergy
Archon of Sun's Grace
20% of 3778 decks
+18% synergy
Jolrael, Mwonvuli Recluse
19% of 1208 decks
+18% synergy
Alseid of Life's Bounty
18% of 3780 decks
+17% synergy
Sun Titan
18% of 3856 decks
+13% synergy
Shalai, Voice of Plenty
18% of 1223 decks
+16% synergy
Soul Warden
17% of 3874 decks
+15% synergy
Lotho, Corrupt Shirriff
17% of 770 decks
+13% synergy
Mangara, the Diplomat
17% of 3755 decks
+15% synergy
Esper Sentinel
16% of 3655 decks
+6% synergy
Aurelia, the Law Above
15% of 123 decks
+13% synergy
Elas il-Kor, Sadistic Pilgrim
15% of 1351 decks
+12% synergy
Custodi Lich
15% of 2010 decks
+15% synergy
Dina, Soul Steeper
15% of 189 decks
+14% synergy
Ellivere of the Wild Court
15% of 185 decks
+14% synergy
Nylea's Colossus
15% of 1221 decks
+14% synergy
Erebos, God of the Dead
15% of 2017 decks
+14% synergy
Xyris, the Writhing Storm
14% of 98 decks
+14% synergy
Zur the Enchanter
14% of 379 decks
+14% synergy
Kutzil, Malamet Exemplar
14% of 115 decks
+9% synergy
Heliod, Sun-Crowned
14% of 3778 decks
+12% synergy
Vizkopa Guildmage
14% of 2017 decks
+13% synergy
Agatha of the Vile Cauldron
14% of 29 decks
+13% synergy
Prize Pig
14% of 355 decks
+13% synergy
Soul's Attendant
13% of 3856 decks
+12% synergy
Instants (50)
Path to Exile
46% of 3856 decks
+27% synergy
Take the Bait
43% of 123 decks
+42% synergy
Anguished Unmaking
42% of 2011 decks
+36% synergy
Chaos Warp
41% of 1218 decks
+25% synergy
Beast Within
39% of 1229 decks
+20% synergy
Delirium
39% of 1004 decks
+39% synergy
Despark
38% of 1993 decks
+34% synergy
Counterspell
36% of 751 decks
+15% synergy
Backlash
36% of 1004 decks
+36% synergy
Heroic Intervention
36% of 1224 decks
+22% synergy
Generous Gift
34% of 3804 decks
+22% synergy
Inkshield
26% of 1929 decks
+25% synergy
Teferi's Protection
24% of 3835 decks
+14% synergy
Olórin's Searing Light
23% of 174 decks
+22% synergy
Mortify
22% of 2017 decks
+20% synergy
Eladamri's Call
22% of 1232 decks
+19% synergy
Dovin's Veto
22% of 725 decks
+17% synergy
Void Rend
21% of 304 decks
+19% synergy
Negate
21% of 747 decks
+9% synergy
Cyclonic Rift
21% of 747 decks
+6% synergy
Enlightened Tutor
20% of 3874 decks
+12% synergy
Arcane Denial
19% of 751 decks
+10% synergy
Stroke of Midnight
18% of 972 decks
+11% synergy
Final Showdown
16% of 31 decks
+12% synergy
Fracture
16% of 1929 decks
+14% synergy
Terminate
14% of 1004 decks
+9% synergy
Wear // Tear
14% of 1218 decks
+12% synergy
An Offer You Can't Refuse
14% of 584 decks
+4% synergy
Fury Storm
14% of 1208 decks
+14% synergy
Utter End
13% of 2017 decks
+11% synergy
Brainstorm
12% of 751 decks
+1% synergy
Mortality Spear
12% of 189 decks
+11% synergy
Dawn Charm
12% of 3859 decks
+11% synergy
Heliod's Intervention
11% of 3778 decks
+9% synergy
Vampiric Tutor
11% of 2020 decks
+1% synergy
Master Warcraft
11% of 1218 decks
+10% synergy
Galadriel's Dismissal
10% of 482 decks
+8% synergy
Naya Charm
10% of 163 decks
+9% synergy
Tibalt's Trickery
10% of 1160 decks
+7% synergy
Arcbond
9% of 1218 decks
+9% synergy
Malakir Rebirth
9% of 1972 decks
+4% synergy
Aetherize
9% of 747 decks
+6% synergy
Mystical Tutor
9% of 751 decks
+1% synergy
Deflecting Swat
9% of 1194 decks
+1% synergy
Fierce Guardianship
9% of 703 decks
-0% synergy
Mana Drain
9% of 751 decks
+1% synergy
Bovine Intervention
8% of 59 decks
+6% synergy
Comeuppance
8% of 3853 decks
+8% synergy
Assassin's Trophy
8% of 192 decks
+2% synergy
Bedevil
8% of 999 decks
+5% synergy
Sorceries (50)
Blasphemous Act
42% of 1218 decks
+26% synergy
Taunt from the Rampart
34% of 434 decks
+33% synergy
Mob Rule
27% of 1218 decks
+26% synergy
Insatiable Avarice
27% of 15 decks
+21% synergy
Damn
24% of 1898 decks
+20% synergy
Vandalblast
23% of 1218 decks
+15% synergy
Austere Command
23% of 3857 decks
+17% synergy
Cultivate
20% of 1229 decks
-2% synergy
Idyllic Tutor
19% of 3856 decks
+17% synergy
Farewell
19% of 3338 decks
+13% synergy
Debt to the Deathless
17% of 2017 decks
+17% synergy
Approach of the Second Sun
17% of 3836 decks
+15% synergy
Demonic Tutor
17% of 2020 decks
+4% synergy
Supreme Verdict
17% of 747 decks
+13% synergy
Merciless Eviction
17% of 2017 decks
+15% synergy
Read the Bones
16% of 2017 decks
+12% synergy
Mythos of Snapdax
16% of 991 decks
+16% synergy
Incite Rebellion
16% of 1218 decks
+16% synergy
Toxic Deluge
15% of 2017 decks
+6% synergy
Sign in Blood
14% of 2017 decks
+9% synergy
Rampant Growth
14% of 1233 decks
-3% synergy
Resurgent Belief
14% of 3648 decks
+13% synergy
Prisoner's Dilemma
13% of 123 decks
+11% synergy
Farseek
13% of 1229 decks
-3% synergy
Night's Whisper
13% of 2017 decks
+8% synergy
Winds of Rath
13% of 3874 decks
+11% synergy
Exsanguinate
12% of 2017 decks
+10% synergy
Insurrection
12% of 1220 decks
+11% synergy
Fumigate
12% of 3840 decks
+10% synergy
Deadly Tempest
12% of 2012 decks
+11% synergy
Kodama's Reach
12% of 1229 decks
-4% synergy
Dance of the Manse
11% of 715 decks
+10% synergy
Nature's Lore
11% of 1233 decks
-4% synergy
Eerie Ultimatum
11% of 190 decks
+9% synergy
Bala Ged Recovery
11% of 1207 decks
+6% synergy
Promise of Loyalty
10% of 3687 decks
+9% synergy
Wrath of God
10% of 3874 decks
+7% synergy
Vindicate
10% of 2020 decks
+8% synergy
Painful Truths
10% of 2012 decks
+8% synergy
Diabolic Tutor
9% of 2020 decks
+6% synergy
Cut a Deal
9% of 2727 decks
+7% synergy
Spectacular Showdown
8% of 886 decks
+8% synergy
Revival // Revenge
8% of 1999 decks
+8% synergy
Windfall
8% of 751 decks
+1% synergy
Kaya's Wrath
8% of 1999 decks
+7% synergy
Three Visits
8% of 1233 decks
-4% synergy
Sevinne's Reclamation
7% of 3798 decks
+4% synergy
Time Wipe
7% of 724 decks
+6% synergy
Scheming Symmetry
7% of 1990 decks
+6% synergy
Role Reversal
7% of 170 decks
+7% synergy
Utility Artifacts (25)
Sunforger
21% of 1218 decks
+19% synergy
Aetherflux Reservoir
20% of 3840 decks
+16% synergy
Bolas's Citadel
18% of 1995 decks
+13% synergy
Swiftfoot Boots
17% of 3856 decks
-11% synergy
Lightning Greaves
13% of 3859 decks
-12% synergy
Well of Lost Dreams
12% of 3859 decks
+11% synergy
Tainted Sigil
12% of 2017 decks
+12% synergy
Skullclamp
12% of 3859 decks
-1% synergy
Wayfarer's Bauble
11% of 3859 decks
+0% synergy
Mirage Mirror
11% of 3836 decks
+9% synergy
Alhammarret's Archive
10% of 3850 decks
+8% synergy
Glass-Cast Heart
10% of 1805 decks
+10% synergy
Norn's Annex
8% of 3856 decks
+7% synergy
Archaeomancer's Map
8% of 3691 decks
+5% synergy
Folio of Fancies
7% of 716 decks
+6% synergy
Bident of Thassa
7% of 747 decks
+4% synergy
Legacy Weapon
7% of 73 decks
+7% synergy
The One Ring
7% of 1643 decks
-2% synergy
The Indomitable
6% of 78 decks
+5% synergy
Sword of the Animist
6% of 3850 decks
+1% synergy
Pearl Medallion
6% of 3874 decks
+5% synergy
Cosmos Elixir
6% of 3708 decks
+5% synergy
Crawlspace
6% of 3874 decks
+5% synergy
Bloodthirsty Blade
6% of 3798 decks
+5% synergy
Door to Nothingness
6% of 72 decks
+5% synergy
Enchantments (50)
Mirari's Wake
46% of 1232 decks
+43% synergy
Ancestral Mask
44% of 1232 decks
+43% synergy
Seal of Primordium
43% of 1229 decks
+42% synergy
Utopia Sprawl
43% of 1229 decks
+40% synergy
Whip Silk
42% of 1232 decks
+42% synergy
Court of Embereth
41% of 317 decks
+40% synergy
Propaganda
41% of 751 decks
+35% synergy
Overgrowth
40% of 1233 decks
+40% synergy
Court of Ire
38% of 1169 decks
+37% synergy
Wolfwillow Haven
36% of 1212 decks
+35% synergy
Assemble the Legion
35% of 1218 decks
+34% synergy
Smothering Tithe
35% of 3817 decks
+23% synergy
Aura Shards
34% of 1232 decks
+32% synergy
Blind Obedience
34% of 3855 decks
+31% synergy
Sphere of Safety
34% of 3856 decks
+32% synergy
Abundant Growth
32% of 1229 decks
+31% synergy
Exploration
32% of 1233 decks
+28% synergy
Phyrexian Arena
31% of 2020 decks
+23% synergy
Gift of Paradise
29% of 1224 decks
+29% synergy
Authority of the Consuls
29% of 3840 decks
+27% synergy
Curse of Opulence
28% of 1211 decks
+26% synergy
Song of the Dryads
27% of 1229 decks
+26% synergy
Rhystic Study
27% of 750 decks
+13% synergy
Lignify
27% of 1229 decks
+26% synergy
Burgeoning
26% of 1233 decks
+24% synergy
Privileged Position
26% of 1229 decks
+25% synergy
Court of Ambition
25% of 1954 decks
+24% synergy
Darksteel Mutation
25% of 3855 decks
+22% synergy
Sylvan Library
24% of 1233 decks
+18% synergy
Court of Locthwain
24% of 513 decks
+22% synergy
Trouble in Pairs
23% of 301 decks
+17% synergy
Sigil of the Empty Throne
22% of 3856 decks
+21% synergy
Greed
22% of 2020 decks
+21% synergy
Nerd Rage
21% of 28 decks
+20% synergy
Sanguine Bond
21% of 2017 decks
+18% synergy
Case of the Locked Hothouse
21% of 66 decks
+19% synergy
Court of Grace
21% of 3728 decks
+19% synergy
Rancor
20% of 1233 decks
+18% synergy
Luminarch Ascension
20% of 3856 decks
+19% synergy
Solitary Confinement
20% of 3871 decks
+19% synergy
Aura of Silence
19% of 3874 decks
+18% synergy
Verdant Haven
19% of 1229 decks
+19% synergy
High Noon
19% of 16 decks
+18% synergy
Whirlwind of Thought
19% of 166 decks
+17% synergy
Seal of Cleansing
18% of 3873 decks
+17% synergy
Land Tax
18% of 3874 decks
+15% synergy
Marchesa's Decree
17% of 2010 decks
+17% synergy
Court of Ardenvale
17% of 873 decks
+16% synergy
Sanctum of All
17% of 71 decks
+16% synergy
Sheltered Aerie
17% of 1229 decks
+17% synergy
Battles (2)
Invasion of Fiora
9% of 840 decks
+9% synergy
Invasion of Theros
7% of 289 decks
+6% synergy
Planeswalkers (2)
Calix, Destiny's Hand
13% of 1212 decks
+13% synergy
Elspeth, Sun's Champion
10% of 3855 decks
+8% synergy
Utility Lands (41)
Bojuka Bog
42% of 2017 decks
+26% synergy
Reliquary Tower
38% of 3856 decks
+9% synergy
Hall of Heliod's Generosity
27% of 3805 decks
+24% synergy
Rogue's Passage
17% of 3856 decks
-1% synergy
Vault of the Archangel
17% of 2017 decks
+15% synergy
Boseiju, Who Endures
15% of 1082 decks
+6% synergy
Maze of Ith
13% of 3874 decks
+10% synergy
Minas Tirith
13% of 1310 decks
+7% synergy
War Room
12% of 3725 decks
+6% synergy
Kessig Wolf Run
12% of 163 decks
+8% synergy
Eiganjo, Seat of the Empire
10% of 3358 decks
+6% synergy
The Shire
9% of 355 decks
+6% synergy
Urborg, Tomb of Yawgmoth
9% of 3859 decks
-2% synergy
Alchemist's Refuge
8% of 229 decks
+7% synergy
Kor Haven
8% of 3873 decks
+8% synergy
Restless Cottage
8% of 50 decks
+7% synergy
Restless Prairie
8% of 138 decks
+7% synergy
Restless Anchorage
8% of 101 decks
+7% synergy
Westvale Abbey
8% of 2011 decks
+7% synergy
Yavimaya, Cradle of Growth
8% of 3655 decks
-1% synergy
Emeria, the Sky Ruin
8% of 3856 decks
+6% synergy
Academy Ruins
8% of 747 decks
+5% synergy
Nykthos, Shrine to Nyx
8% of 3855 decks
+2% synergy
Cabal Coffers
8% of 2020 decks
+2% synergy
Temple of the False God
7% of 3869 decks
-2% synergy
Otawara, Soaring City
7% of 618 decks
-1% synergy
Mistveil Plains
7% of 3856 decks
+6% synergy
Gavony Township
7% of 1229 decks
+5% synergy
Castle Ardenvale
6% of 3793 decks
+4% synergy
Castle Locthwain
6% of 1987 decks
+3% synergy
Serra's Sanctum
6% of 3874 decks
+6% synergy
Shinka, the Bloodsoaked Keep
6% of 1218 decks
+5% synergy
Restless Reef
6% of 49 decks
+5% synergy
Secluded Steppe
6% of 3871 decks
+4% synergy
Mystic Sanctuary
6% of 715 decks
-1% synergy
Throne of the High City
6% of 3841 decks
+5% synergy
Ancient Tomb
5% of 3874 decks
-5% synergy
Sokenzan, Crucible of Defiance
5% of 1055 decks
+3% synergy
Arid Archway
5% of 56 decks
+2% synergy
Takenuma, Abandoned Mire
5% of 1793 decks
-1% synergy
Restless Fortress
5% of 560 decks
+4% synergy
Mana Artifacts (32)
Sol Ring
75% of 3874 decks
-9% synergy
Orzhov Signet
60% of 2017 decks
+53% synergy
Boros Signet
58% of 1218 decks
+52% synergy
Arcane Signet
58% of 3793 decks
-13% synergy
Rakdos Signet
58% of 1003 decks
+51% synergy
Talisman of Hierarchy
50% of 1991 decks
+44% synergy
Talisman of Conviction
48% of 1201 decks
+43% synergy
Dimir Signet
41% of 379 decks
+33% synergy
Talisman of Indulgence
41% of 1003 decks
+36% synergy
Azorius Signet
40% of 747 decks
+34% synergy
Izzet Signet
25% of 175 decks
+18% synergy
Talisman of Dominance
20% of 379 decks
+12% synergy
Fellwar Stone
18% of 3874 decks
-3% synergy
Talisman of Progress
17% of 747 decks
+13% synergy
Talisman of Creativity
17% of 169 decks
+11% synergy
Commander's Sphere
15% of 3853 decks
-2% synergy
Thought Vessel
15% of 3846 decks
-1% synergy
Mind Stone
14% of 3874 decks
-4% synergy
Bounty Board
13% of 31 decks
+12% synergy
Golgari Signet
12% of 193 decks
+10% synergy
Chromatic Lantern
10% of 3856 decks
+0% synergy
Gruul Signet
9% of 163 decks
+6% synergy
Talisman of Resilience
8% of 191 decks
+6% synergy
Pristine Talisman
8% of 3856 decks
+7% synergy
Timeless Lotus
8% of 40 decks
+6% synergy
Marble Diamond
7% of 3874 decks
+4% synergy
Simic Signet
7% of 229 decks
+3% synergy
Misleading Signpost
6% of 142 decks
+5% synergy
Mardu Banner
6% of 1003 decks
+6% synergy
Decanter of Endless Water
6% of 2727 decks
+1% synergy
Selesnya Signet
6% of 1229 decks
+4% synergy
Staff of Compleation
5% of 1878 decks
+3% synergy
Lands (50)
Command Tower
76% of 3856 decks
+3% synergy
Nomad Outpost
69% of 1003 decks
+66% synergy
Canopy Vista
60% of 1227 decks
+52% synergy
Arcane Sanctum
52% of 379 decks
+48% synergy
Caves of Koilos
50% of 2020 decks
+44% synergy
Sunpetal Grove
47% of 1229 decks
+43% synergy
Battlefield Forge
46% of 1220 decks
+41% synergy
Godless Shrine
45% of 2017 decks
+36% synergy
Isolated Chapel
44% of 2017 decks
+38% synergy
Seaside Citadel
44% of 229 decks
+41% synergy
Savai Triome
44% of 991 decks
+40% synergy
Temple Garden
43% of 1229 decks
+34% synergy
Dragonskull Summit
41% of 1003 decks
+34% synergy
Sandsteppe Citadel
40% of 193 decks
+38% synergy
Blood Crypt
39% of 1003 decks
+29% synergy
Prairie Stream
38% of 741 decks
+31% synergy
Spara's Headquarters
38% of 175 decks
+34% synergy
Bountiful Promenade
38% of 1222 decks
+33% synergy
Hallowed Fountain
38% of 747 decks
+29% synergy
Sacred Foundry
38% of 1218 decks
+30% synergy
Mystic Monastery
38% of 175 decks
+35% synergy
Clifftop Retreat
37% of 1218 decks
+32% synergy
The World Tree
37% of 70 decks
+35% synergy
Temple of Triumph
36% of 1218 decks
+33% synergy
Watery Grave
34% of 379 decks
+24% synergy
Temple of Plenty
34% of 1229 decks
+31% synergy
Temple of Silence
33% of 2017 decks
+29% synergy
Exotic Orchard
33% of 3856 decks
-1% synergy
Jungle Shrine
33% of 163 decks
+29% synergy
Branchloft Pathway
32% of 1208 decks
+30% synergy
Fortified Village
32% of 1226 decks
+28% synergy
Orzhov Basilica
31% of 2017 decks
+27% synergy
Brushland
31% of 1233 decks
+28% synergy
Vault of Champions
31% of 1952 decks
+25% synergy
Breeding Pool
31% of 229 decks
+21% synergy
Overgrown Tomb
30% of 193 decks
+21% synergy
Boros Garrison
30% of 1218 decks
+27% synergy
Spectator Seating
30% of 1169 decks
+24% synergy
Temple of Malice
30% of 1003 decks
+27% synergy
Sungrass Prairie
29% of 1232 decks
+27% synergy
Raffine's Tower
29% of 302 decks
+25% synergy
Sunken Hollow
28% of 375 decks
+19% synergy
Glacial Fortress
28% of 747 decks
+23% synergy
Overgrown Farmland
28% of 1129 decks
+24% synergy
Jetmir's Garden
27% of 132 decks
+23% synergy
Luxury Suite
27% of 1000 decks
+21% synergy
Rakdos Carnarium
27% of 1003 decks
+23% synergy
Shadowy Backstreet
27% of 177 decks
+22% synergy
Stomping Ground
26% of 163 decks
+17% synergy
Smoldering Marsh
25% of 1002 decks
+18% synergy