Fleecemane Lion (Card)
Fleecemane Lion
In 11988 decks
1% of 831034 decks
Oct 6, 2021
How to play the Aura of Courage Precon in EDH
This is the comprehensive guide to playing the Aura of Courage precon, led by This guide contains all the secrets to piloting Aura of Courage to victory straight out of the box! The main strategy of the Aura of Courage deck is to use Auras and Equipment to suit up one creature into an unstoppable […]
Top Commanders (10)
Arahbo, Roar of the World
78.44% of 5691 decks
4464 decks
Kaheera, the Orphanguard
45.08% of 244 decks
110 decks
Nazahn, Revered Bladesmith
32.05% of 518 decks
166 decks
Mirri, Weatherlight Duelist
28.23% of 1222 decks
345 decks
Rin and Seri, Inseparable
24.60% of 13124 decks
3229 decks
Galea, Kindler of Hope
21.31% of 6129 decks
1306 decks
Sovereign Okinec Ahau
7.11% of 2263 decks
161 decks
Marisi, Breaker of the Coil
4.78% of 3515 decks
168 decks
Nethroi, Apex of Death
3.64% of 5464 decks
199 decks
Jetmir, Nexus of Revels
2.40% of 10061 decks
241 decks
New Cards (5)
Ajani, Nacatl Pariah
100% of 29 decks
+93% synergy
Dogmeat, Ever Loyal
51% of 78 decks
+51% synergy
Alpha Deathclaw
50% of 6 decks
+46% synergy
Warleader's Call
36% of 220 decks
+31% synergy
Lush Portico
33% of 511 decks
+29% synergy
High Synergy Cards (10)
Kutzil, Malamet Exemplar
84% of 2380 decks
+79% synergy
Regal Caracal
69% of 11957 decks
+68% synergy
Feline Sovereign
68% of 11661 decks
+67% synergy
King of the Pride
64% of 11828 decks
+64% synergy
Jetmir, Nexus of Revels
64% of 3851 decks
+63% synergy
Jinnie Fay, Jetmir's Second
63% of 3812 decks
+62% synergy
Cold-Eyed Selkie
60% of 1880 decks
+59% synergy
Imprisoned in the Moon
60% of 1875 decks
+58% synergy
Pride Sovereign
58% of 11955 decks
+58% synergy
Sovereign Okinec Ahau
57% of 2501 decks
+56% synergy
Top Cards (10)
Cultivate
63% of 11986 decks
+40% synergy
Brainstorm
59% of 1880 decks
+47% synergy
Winged Boots
58% of 1813 decks
+57% synergy
Swords to Plowshares
58% of 11986 decks
+29% synergy
Felidar Retreat
56% of 11512 decks
+52% synergy
Keeper of Fables
56% of 11788 decks
+55% synergy
Qasali Pridemage
55% of 11986 decks
+54% synergy
Leonin Warleader
55% of 11876 decks
+54% synergy
Bronzehide Lion
53% of 11744 decks
+53% synergy
Bant Charm
52% of 1880 decks
+51% synergy
Creatures (50)
Marisi, Breaker of the Coil
51% of 4210 decks
+51% synergy
Qasali Slingers
51% of 11952 decks
+50% synergy
Mirri, Weatherlight Duelist
50% of 11952 decks
+49% synergy
Snapdax, Apex of the Hunt
49% of 311 decks
+49% synergy
Lion Sash
48% of 10394 decks
+46% synergy
Jazal Goldmane
48% of 11976 decks
+47% synergy
Prowling Serpopard
47% of 11957 decks
+47% synergy
Adorned Pouncer
46% of 11955 decks
+46% synergy
Necropanther
45% of 662 decks
+44% synergy
Illuna, Apex of Wishes
44% of 312 decks
+44% synergy
Taurean Mauler
43% of 4222 decks
+42% synergy
Hungry Lynx
42% of 11952 decks
+41% synergy
Vadrok, Apex of Thunder
42% of 313 decks
+41% synergy
Brimaz, King of Oreskos
41% of 11985 decks
+40% synergy
Malamet Brawler
40% of 1417 decks
+40% synergy
Otrimi, the Ever-Playful
40% of 352 decks
+40% synergy
Brokkos, Apex of Forever
39% of 352 decks
+39% synergy
Kaheera, the Orphanguard
37% of 11697 decks
+37% synergy
Jedit Ojanen of Efrava
37% of 11986 decks
+37% synergy
Boneyard Lurker
36% of 664 decks
+36% synergy
Sacred Cat
35% of 11957 decks
+35% synergy
Lore Drakkis
33% of 312 decks
+32% synergy
Skyhunter Strike Force
32% of 5301 decks
+31% synergy
Oreskos Explorer
31% of 11969 decks
+31% synergy
Tesak, Judith's Hellhound
30% of 220 decks
+30% synergy
Bolt Hound
30% of 4192 decks
+30% synergy
Dirge Bat
29% of 658 decks
+29% synergy
Alms Collector
29% of 11952 decks
+28% synergy
Chittering Harvester
28% of 664 decks
+28% synergy
Kemba, Kha Enduring
27% of 5301 decks
+26% synergy
Insatiable Hemophage
27% of 664 decks
+26% synergy
Realmwalker
26% of 11325 decks
+23% synergy
Felidar Sovereign
26% of 11986 decks
+25% synergy
Nethroi, Apex of Death
25% of 658 decks
+25% synergy
Riverwise Augur
25% of 1871 decks
+25% synergy
The Reality Chip
25% of 1494 decks
+23% synergy
Temur Sabertooth
25% of 11974 decks
+23% synergy
Kutzil's Flanker
24% of 2380 decks
+24% synergy
Pridemalkin
24% of 11570 decks
+24% synergy
Stalking Leonin
24% of 11952 decks
+24% synergy
Storvald, Frost Giant Jarl
24% of 1813 decks
+24% synergy
Pack Leader
23% of 11663 decks
+23% synergy
Whitemane Lion
23% of 11986 decks
+22% synergy
Jewel Thief
22% of 9438 decks
+22% synergy
Mirror Entity
22% of 11986 decks
+20% synergy
Skyhunter Skirmisher
22% of 11986 decks
+22% synergy
Cavern Whisperer
22% of 664 decks
+21% synergy
Nazahn, Revered Bladesmith
22% of 11952 decks
+21% synergy
Jareth, Leonine Titan
21% of 11986 decks
+21% synergy
Cubwarden
21% of 11705 decks
+21% synergy
Instants (50)
Heroic Intervention
45% of 11958 decks
+31% synergy
Path to Exile
44% of 11986 decks
+25% synergy
White Sun's Zenith
43% of 11986 decks
+42% synergy
Beast Within
37% of 11986 decks
+17% synergy
Boros Charm
36% of 4222 decks
+30% synergy
Return of the Wildspeaker
27% of 11788 decks
+20% synergy
Generous Gift
25% of 11811 decks
+13% synergy
Abzan Charm
23% of 691 decks
+22% synergy
Naya Charm
23% of 4222 decks
+22% synergy
Mythos of Nethroi
22% of 664 decks
+22% synergy
Counterspell
21% of 1880 decks
+0% synergy
Ride the Avalanche
21% of 1813 decks
+21% synergy
Diviner's Portent
20% of 1813 decks
+19% synergy
Eladamri's Call
17% of 11986 decks
+14% synergy
Akroma's Will
16% of 11442 decks
+11% synergy
Cabaretti Charm
16% of 3852 decks
+15% synergy
Teferi's Protection
15% of 11952 decks
+6% synergy
Archdruid's Charm
14% of 582 decks
+9% synergy
Anguished Unmaking
14% of 683 decks
+8% synergy
Stroke of Midnight
14% of 2912 decks
+6% synergy
Despark
14% of 672 decks
+10% synergy
Unbreakable Formation
14% of 11843 decks
+10% synergy
Putrefy
13% of 691 decks
+9% synergy
Crib Swap
12% of 11986 decks
+11% synergy
Kindred Summons
12% of 11952 decks
+11% synergy
Assassin's Trophy
12% of 673 decks
+6% synergy
Second Harvest
11% of 11962 decks
+9% synergy
Chaos Warp
11% of 4222 decks
-5% synergy
Hunter's Insight
11% of 11986 decks
+9% synergy
Cosmic Rebirth
10% of 3948 decks
+9% synergy
Pledge of Unity
9% of 11835 decks
+9% synergy
Utter End
9% of 691 decks
+7% synergy
Enlightened Tutor
9% of 11986 decks
+1% synergy
And They Shall Know No Fear
9% of 6449 decks
+8% synergy
Mortify
9% of 691 decks
+6% synergy
Brokers Charm
9% of 1299 decks
+8% synergy
Rootborn Defenses
8% of 11986 decks
+7% synergy
Deathsprout
8% of 672 decks
+7% synergy
Entish Restoration
8% of 3654 decks
+4% synergy
Valorous Stance
8% of 11974 decks
+7% synergy
Return to Nature
8% of 11834 decks
+4% synergy
Krosan Grip
8% of 11986 decks
+3% synergy
Worldly Tutor
8% of 11986 decks
+1% synergy
Negate
8% of 1880 decks
-4% synergy
Flawless Maneuver
7% of 11678 decks
+3% synergy
Grisly Salvage
7% of 691 decks
+6% synergy
Condemn
7% of 11986 decks
+7% synergy
Cyclonic Rift
7% of 1880 decks
-7% synergy
Terminate
7% of 320 decks
+2% synergy
Dovin's Veto
7% of 1866 decks
+2% synergy
Sorceries (50)
Rampant Growth
44% of 11986 decks
+27% synergy
Kodama's Reach
40% of 11986 decks
+24% synergy
Serum Visions
36% of 1880 decks
+34% synergy
Farseek
34% of 11986 decks
+18% synergy
Nature's Lore
31% of 11986 decks
+17% synergy
Harmonize
28% of 11986 decks
+23% synergy
Eerie Ultimatum
27% of 662 decks
+26% synergy
Titanic Ultimatum
26% of 4222 decks
+26% synergy
Shamanic Revelation
23% of 11974 decks
+18% synergy
Three Visits
19% of 11986 decks
+7% synergy
Duneblast
17% of 691 decks
+17% synergy
Ruinous Ultimatum
16% of 310 decks
+14% synergy
Mythos of Snapdax
16% of 311 decks
+15% synergy
Austere Command
15% of 11986 decks
+9% synergy
Camaraderie
15% of 11857 decks
+14% synergy
Farewell
14% of 10057 decks
+7% synergy
Damn
13% of 607 decks
+9% synergy
Soul's Majesty
13% of 11986 decks
+12% synergy
Release the Dogs
12% of 11570 decks
+12% synergy
Blasphemous Act
12% of 4222 decks
-4% synergy
Traverse the Outlands
12% of 11952 decks
+10% synergy
Open the Armory
12% of 11962 decks
+9% synergy
Rishkar's Expertise
11% of 11958 decks
+6% synergy
Divine Reckoning
11% of 11986 decks
+10% synergy
Winds of Rath
11% of 11986 decks
+10% synergy
Overwhelming Stampede
11% of 11986 decks
+8% synergy
Mythos of Brokkos
10% of 352 decks
+10% synergy
Wrath of God
9% of 11986 decks
+6% synergy
Decimate
8% of 4222 decks
+6% synergy
Demonic Tutor
7% of 691 decks
-5% synergy
Cleansing Nova
7% of 11876 decks
+5% synergy
Can't Stay Away
7% of 586 decks
+7% synergy
Painful Truths
7% of 688 decks
+5% synergy
Hunter's Prowess
7% of 11985 decks
+7% synergy
Merciless Eviction
7% of 691 decks
+6% synergy
Ponder
7% of 1880 decks
+0% synergy
Mythos of Illuna
7% of 312 decks
+7% synergy
Vindicate
7% of 691 decks
+5% synergy
Diabolic Tutor
7% of 691 decks
+3% synergy
Bala Ged Recovery
7% of 11528 decks
+2% synergy
Skyshroud Claim
6% of 11986 decks
+2% synergy
Triumph of the Hordes
6% of 11986 decks
+4% synergy
Dig Up
6% of 583 decks
+6% synergy
Hour of Reckoning
6% of 11986 decks
+4% synergy
Overrun
6% of 11986 decks
+5% synergy
Rout
6% of 11986 decks
+6% synergy
Terror Tide
6% of 52 decks
+4% synergy
Supreme Verdict
6% of 1880 decks
+2% synergy
Nissa's Pilgrimage
5% of 11971 decks
+5% synergy
Kaya's Wrath
5% of 672 decks
+5% synergy
Utility Artifacts (41)
Swiftfoot Boots
49% of 11986 decks
+21% synergy
Behemoth Sledge
29% of 11986 decks
+29% synergy
Sword of the Animist
29% of 11971 decks
+24% synergy
Herald's Horn
29% of 11952 decks
+23% synergy
Lightning Greaves
28% of 11986 decks
+2% synergy
Hammer of Nazahn
24% of 11952 decks
+22% synergy
Power Fist
22% of 178 decks
+18% synergy
Esika's Chariot
22% of 11370 decks
+21% synergy
Sword of Wealth and Power
18% of 45 decks
+9% synergy
Argentum Armor
18% of 11986 decks
+17% synergy
Skullclamp
17% of 11986 decks
+4% synergy
Conjurer's Mantle
17% of 4351 decks
+16% synergy
Vanquisher's Banner
17% of 11901 decks
+12% synergy
Loxodon Warhammer
16% of 11986 decks
+14% synergy
Robe of the Archmagi
16% of 1071 decks
+15% synergy
Maskwood Nexus
15% of 11325 decks
+13% synergy
Lifecrafter's Bestiary
15% of 11958 decks
+13% synergy
Basilisk Collar
15% of 11986 decks
+12% synergy
Heirloom Blade
15% of 11952 decks
+14% synergy
Colossus Hammer
13% of 11799 decks
+12% synergy
Sword of Vengeance
13% of 11986 decks
+11% synergy
Robe of Stars
12% of 11085 decks
+11% synergy
Blackblade Reforged
12% of 11890 decks
+8% synergy
Belt of Giant Strength
12% of 11085 decks
+11% synergy
Masterwork of Ingenuity
11% of 11976 decks
+10% synergy
The Great Henge
11% of 11788 decks
+6% synergy
Holy Avenger
11% of 11085 decks
+11% synergy
Shadowspear
11% of 11744 decks
+7% synergy
Bloodforged Battle-Axe
10% of 11952 decks
+9% synergy
Door of Destinies
8% of 11986 decks
+7% synergy
Door to Nothingness
8% of 300 decks
+8% synergy
Pip-Boy 3000
8% of 178 decks
+4% synergy
Quietus Spike
8% of 11986 decks
+7% synergy
Coat of Arms
7% of 11986 decks
+5% synergy
Sword of Feast and Famine
7% of 11986 decks
+5% synergy
Mithril Coat
7% of 3488 decks
+0% synergy
Moonsilver Spear
7% of 11986 decks
+7% synergy
Maul of the Skyclaves
7% of 11512 decks
+6% synergy
Icon of Ancestry
7% of 11799 decks
+6% synergy
Explorer's Scope
6% of 11986 decks
+5% synergy
Stoneforge Masterwork
6% of 11965 decks
+6% synergy
Enchantments (50)
Shielding Plax
51% of 1880 decks
+50% synergy
Eel Umbra
44% of 1880 decks
+44% synergy
Mirari's Wake
36% of 11986 decks
+33% synergy
Impact Tremors
32% of 4221 decks
+28% synergy
Beastmaster Ascension
28% of 11986 decks
+26% synergy
Aqueous Form
28% of 1880 decks
+26% synergy
Curse of Verbosity
28% of 1872 decks
+27% synergy
Leyline of the Guildpact
27% of 15 decks
+24% synergy
Netherese Puzzle-Ward
24% of 1813 decks
+23% synergy
Tribute to the World Tree
23% of 4516 decks
+18% synergy
Psychic Impetus
23% of 1851 decks
+22% synergy
Rancor
21% of 11986 decks
+19% synergy
Rhythm of the Wild
19% of 4211 decks
+14% synergy
Guardian Project
16% of 11843 decks
+12% synergy
Eaten by Piranhas
16% of 81 decks
+15% synergy
Steel of the Godhead
16% of 1880 decks
+15% synergy
Strong Back
15% of 178 decks
+11% synergy
Wild Growth
14% of 11986 decks
+9% synergy
Cathars' Crusade
14% of 11986 decks
+11% synergy
Aura Shards
14% of 11986 decks
+11% synergy
Unnatural Growth
14% of 10684 decks
+11% synergy
Combat Research
13% of 792 decks
+12% synergy
Shared Animosity
13% of 4222 decks
+11% synergy
Mantle of the Ancients
13% of 11085 decks
+11% synergy
Cabaretti Ascendancy
12% of 3650 decks
+12% synergy
Zendikar Resurgent
12% of 11965 decks
+10% synergy
Utopia Sprawl
12% of 11986 decks
+8% synergy
Kenrith's Transformation
12% of 11788 decks
+8% synergy
Elven Chorus
12% of 3580 decks
+9% synergy
Sigarda's Aid
11% of 11962 decks
+10% synergy
Anointed Procession
11% of 11957 decks
+7% synergy
Inspiring Leader
11% of 7908 decks
+10% synergy
Fertile Ground
11% of 11986 decks
+9% synergy
Smothering Tithe
11% of 11843 decks
-1% synergy
Death's Oasis
11% of 664 decks
+10% synergy
Finest Hour
10% of 1880 decks
+10% synergy
Intangible Virtue
10% of 11986 decks
+8% synergy
Idolized
10% of 178 decks
+5% synergy
Parallel Lives
9% of 11986 decks
+6% synergy
Abzan Ascendancy
9% of 691 decks
+9% synergy
Forge Anew
9% of 3730 decks
+8% synergy
Folk Hero
9% of 7908 decks
+8% synergy
Deadbridge Chant
8% of 691 decks
+8% synergy
Flowering of the White Tree
8% of 3654 decks
+5% synergy
Glorious Sunrise
8% of 10509 decks
+8% synergy
Rally the Ranks
8% of 11370 decks
+8% synergy
Tocasia's Welcome
8% of 6076 decks
+6% synergy
Sylvan Library
8% of 11986 decks
+2% synergy
Rising of the Day
8% of 1034 decks
+4% synergy
Doubling Season
8% of 11986 decks
+4% synergy
Battles (2)
Invasion of Alara
7% of 86 decks
+7% synergy
Invasion of Theros
5% of 433 decks
+5% synergy
Planeswalkers (8)
Ajani, the Greathearted
23% of 11837 decks
+23% synergy
Ajani, Caller of the Pride
15% of 11986 decks
+15% synergy
Ajani, Adversary of Tyrants
10% of 11876 decks
+10% synergy
Comet, Stellar Pup
10% of 2198 decks
+9% synergy
Ajani, Strength of the Pride
9% of 11806 decks
+8% synergy
Ajani, Sleeper Agent
9% of 7383 decks
+8% synergy
Ajani, Mentor of Heroes
6% of 11984 decks
+6% synergy
Ajani Unyielding
6% of 11958 decks
+6% synergy
Utility Lands (27)
Halimar Depths
51% of 1880 decks
+49% synergy
Lumbering Falls
41% of 1877 decks
+41% synergy
Animal Sanctuary
40% of 11596 decks
+39% synergy
Rogue's Passage
31% of 11986 decks
+13% synergy
Gavony Township
28% of 11986 decks
+25% synergy
Mosswort Bridge
22% of 11986 decks
+17% synergy
Minas Tirith
19% of 3382 decks
+14% synergy
Reliquary Tower
16% of 11986 decks
-12% synergy
Yavimaya, Cradle of Growth
14% of 11172 decks
+5% synergy
Bojuka Bog
14% of 691 decks
-2% synergy
Kessig Wolf Run
13% of 4222 decks
+10% synergy
Temple of the False God
12% of 11986 decks
+2% synergy
Boseiju, Who Endures
11% of 10456 decks
+2% synergy
Stirring Wildwood
11% of 11986 decks
+10% synergy
Rivendell
10% of 273 decks
+6% synergy
Eiganjo, Seat of the Empire
7% of 10117 decks
+3% synergy
Secluded Steppe
7% of 11986 decks
+6% synergy
Tranquil Thicket
7% of 11986 decks
+5% synergy
Vault of the Archangel
7% of 691 decks
+5% synergy
Restless Prairie
7% of 2534 decks
+6% synergy
Windbrisk Heights
7% of 11986 decks
+5% synergy
Restless Bivouac
6% of 833 decks
+5% synergy
Academy Ruins
6% of 1880 decks
+3% synergy
Drannith Ruins
6% of 3948 decks
+5% synergy
Castle Embereth
6% of 4207 decks
+4% synergy
Vitu-Ghazi, the City-Tree
5% of 11986 decks
+5% synergy
Saltcrusted Steppe
5% of 11986 decks
+5% synergy
Mana Artifacts (15)
Sol Ring
85% of 11986 decks
+1% synergy
Arcane Signet
69% of 11788 decks
-2% synergy
Selesnya Signet
28% of 11986 decks
+26% synergy
Boros Signet
24% of 4222 decks
+19% synergy
Gruul Signet
21% of 4222 decks
+18% synergy
Commander's Sphere
17% of 11976 decks
-0% synergy
Talisman of Unity
12% of 11986 decks
+10% synergy
Golgari Signet
10% of 691 decks
+7% synergy
Orzhov Signet
9% of 691 decks
+2% synergy
Indatha Crystal
7% of 664 decks
+7% synergy
Timeless Lotus
7% of 174 decks
+6% synergy
Chromatic Lantern
6% of 11986 decks
-3% synergy
Talisman of Conviction
6% of 4211 decks
+1% synergy
Fellwar Stone
5% of 11986 decks
-15% synergy
Talisman of Impulse
5% of 4222 decks
+4% synergy
Lands (50)
Command Tower
88% of 11986 decks
+15% synergy
Seaside Citadel
75% of 1880 decks
+72% synergy
Prairie Stream
70% of 1877 decks
+63% synergy
Jungle Shrine
65% of 4222 decks
+61% synergy
Path of Ancestry
61% of 11952 decks
+41% synergy
Canopy Vista
60% of 11970 decks
+53% synergy
Port Town
59% of 1875 decks
+55% synergy
Skycloud Expanse
53% of 1880 decks
+50% synergy
Azorius Chancery
50% of 1880 decks
+47% synergy
Jetmir's Garden
49% of 3650 decks
+45% synergy
Simic Growth Chamber
49% of 1880 decks
+45% synergy
Cinder Glade
48% of 4220 decks
+40% synergy
Evolving Wilds
43% of 11986 decks
+22% synergy
Sandsteppe Citadel
42% of 691 decks
+40% synergy
Thriving Isle
40% of 1844 decks
+38% synergy
Sunpetal Grove
39% of 11986 decks
+34% synergy
Temple Garden
37% of 11986 decks
+28% synergy
Indatha Triome
36% of 661 decks
+33% synergy
Exotic Orchard
35% of 11986 decks
+0% synergy
Spara's Headquarters
33% of 1259 decks
+29% synergy
Selesnya Sanctuary
33% of 11986 decks
+29% synergy
The World Tree
32% of 289 decks
+30% synergy
Terramorphic Expanse
32% of 11986 decks
+15% synergy
Stomping Ground
31% of 4222 decks
+22% synergy
Overgrown Tomb
31% of 691 decks
+21% synergy
Overgrown Farmland
31% of 10760 decks
+27% synergy
Fortified Village
30% of 11962 decks
+27% synergy
Ketria Triome
29% of 312 decks
+25% synergy
Sacred Foundry
29% of 4222 decks
+20% synergy
Zagoth Triome
27% of 351 decks
+24% synergy
Frontier Bivouac
27% of 317 decks
+24% synergy
Krosan Verge
27% of 11986 decks
+24% synergy
Temple of Plenty
27% of 11985 decks
+24% synergy
Godless Shrine
26% of 691 decks
+17% synergy
Bountiful Promenade
26% of 11878 decks
+21% synergy
Raugrin Triome
26% of 312 decks
+23% synergy
Sungrass Prairie
25% of 11986 decks
+23% synergy
Opulent Palace
25% of 361 decks
+22% synergy
Rockfall Vale
25% of 3994 decks
+20% synergy
Blossoming Sands
24% of 11978 decks
+23% synergy
Rootbound Crag
24% of 4222 decks
+19% synergy
Temple of Triumph
23% of 4222 decks
+20% synergy
Savai Triome
23% of 310 decks
+20% synergy
Myriad Landscape
22% of 11976 decks
+1% synergy
Ziatora's Proving Ground
22% of 249 decks
+18% synergy
Hallowed Fountain
21% of 1880 decks
+11% synergy
Clifftop Retreat
21% of 4222 decks
+15% synergy
Branchloft Pathway
20% of 11538 decks
+18% synergy
Undercity Sewers
20% of 15 decks
+14% synergy
Breeding Pool
20% of 1880 decks
+11% synergy