Umbral Mantle + Task Force + Worthy Cause

Umbral Mantle
Task Force
Worthy Cause

Requires
Umbral Mantle must be on the battlefield. Task Force must be on the battlefield. Worthy Cause must be in hand. Mana needed:
Steps
  1. Activate Umbral Mantle's equip ability by paying 0, targeting Task Force.
  2. Task Force triggers, giving itself +0/+3 until end of turn.
  3. Resolve the Umbral Mantle ability, attaching it to Task Force.
  4. Repeat from step 1 an arbitrarily large number of times.
  5. Cast Worthy Cause by paying and by sacrificing Task Force, causing you to gain life equal to Task Force's toughness.
Results
Infinite lifegain.

Lin Sivvi, Defiant Hero
1.41% of 568 decks 8 decks
Zirda, the Dawnwaker
0.64% of 1721 decks 11 decks
High Synergy Cards
Outrider en-Kor
95% of 20 decks +95% synergy
Sunforger
91% of 11 decks +90% synergy
Basalt Monolith
85% of 20 decks +82% synergy
Soulbright Flamekin
82% of 11 decks +82% synergy
Needle Spires
82% of 11 decks +81% synergy
Kher Keep
82% of 11 decks +80% synergy
Defiant Vanguard
75% of 20 decks +75% synergy
Ramosian Sergeant
75% of 20 decks +75% synergy
Defiant Falcon
75% of 20 decks +75% synergy
Bound in Silence
75% of 20 decks +75% synergy
Top Cards
Fervor
73% of 11 decks +72% synergy
Boros Charm
73% of 11 decks +67% synergy
Amrou Scout
70% of 20 decks +70% synergy
Crackdown Construct
70% of 20 decks +70% synergy
Aetherflux Reservoir
70% of 20 decks +66% synergy
Otharri, Suns' Glory
67% of 9 decks +66% synergy
Neyali, Suns' Vanguard
67% of 9 decks +66% synergy
Ramosian Lieutenant
65% of 20 decks +65% synergy
Staff of Domination
65% of 20 decks +63% synergy
Mirror Entity
65% of 20 decks +63% synergy
Creatures
Shield Dancer
60% of 20 decks +60% synergy
Ramosian Captain
60% of 20 decks +60% synergy
Moonshaker Cavalry
60% of 5 decks +58% synergy
Lawbringer
55% of 20 decks +55% synergy
Lightbringer
55% of 20 decks +55% synergy
Cho-Manno, Revolutionary
55% of 20 decks +55% synergy
Palladium Myr
55% of 20 decks +53% synergy
Reveille Squad
50% of 20 decks +50% synergy
Voltaic Construct
50% of 20 decks +50% synergy
Ramosian Commander
45% of 20 decks +45% synergy
Patrol Signaler
45% of 20 decks +45% synergy
Children of Korlis
45% of 20 decks +45% synergy
Lin Sivvi, Defiant Hero
40% of 20 decks +40% synergy
Cogwork Assembler
40% of 20 decks +40% synergy
Tuktuk Rubblefort
36% of 11 decks +36% synergy
Goblin Engineer
36% of 11 decks +35% synergy
Brash Taunter
36% of 11 decks +34% synergy
Queen Kayla bin-Kroog
33% of 9 decks +33% synergy
Rappelling Scouts
30% of 20 decks +30% synergy
Ramosian Sky Marshal
25% of 20 decks +25% synergy
Whipcorder
25% of 20 decks +25% synergy
Ramosian Revivalist
25% of 20 decks +25% synergy
Oswald Fiddlebender
25% of 20 decks +24% synergy
Giver of Runes
25% of 20 decks +24% synergy
Welcoming Vampire
25% of 20 decks +22% synergy
Mentor of the Meek
25% of 20 decks +22% synergy
Mother of Runes
25% of 20 decks +22% synergy
Grand Abolisher
25% of 20 decks +21% synergy
Esper Sentinel
25% of 20 decks +15% synergy
Archivist of Oghma
22% of 18 decks +19% synergy
Zealot il-Vec
20% of 20 decks +20% synergy
Knight of the Holy Nimbus
20% of 20 decks +20% synergy
Metalworker
20% of 20 decks +20% synergy
Weathered Wayfarer
20% of 20 decks +18% synergy
Walking Ballista
20% of 20 decks +17% synergy
Ornithopter of Paradise
20% of 20 decks +16% synergy
Ballista Squad
15% of 20 decks +15% synergy
Toymaker
15% of 20 decks +15% synergy
Shaman en-Kor
15% of 20 decks +15% synergy
Myr Welder
15% of 20 decks +15% synergy
Palace Jailer
15% of 20 decks +14% synergy
Solitude
15% of 20 decks +14% synergy
Sun Titan
15% of 20 decks +10% synergy
Instants
Condemn
60% of 20 decks +60% synergy
Stroke of Midnight
60% of 5 decks +54% synergy
Swords to Plowshares
55% of 20 decks +26% synergy
Path to Exile
45% of 20 decks +25% synergy
Enlightened Tutor
40% of 20 decks +32% synergy
Teferi's Protection
35% of 20 decks +26% synergy
Starstorm
27% of 11 decks +26% synergy
Kazuul's Fury
27% of 11 decks +26% synergy
Forsake the Worldly
25% of 20 decks +25% synergy
Shelter
25% of 20 decks +24% synergy
Heliod's Intervention
25% of 20 decks +23% synergy
Disenchant
25% of 20 decks +23% synergy
Generous Gift
25% of 20 decks +13% synergy
Cosmic Intervention
20% of 20 decks +19% synergy
Crib Swap
20% of 20 decks +19% synergy
Oblation
15% of 20 decks +14% synergy
Settle the Wreckage
15% of 20 decks +14% synergy
Sorceries
Open the Armory
65% of 20 decks +63% synergy
Sevinne's Reclamation
65% of 20 decks +62% synergy
Gamble
36% of 11 decks +31% synergy
Jeska's Will
36% of 11 decks +28% synergy
Martial Coup
35% of 20 decks +34% synergy
Decree of Justice
30% of 20 decks +30% synergy
Dismantling Wave
30% of 20 decks +30% synergy
Finale of Glory
30% of 20 decks +29% synergy
Wrath of God
30% of 20 decks +27% synergy
Faithless Looting
27% of 11 decks +19% synergy
Dusk // Dawn
20% of 20 decks +18% synergy
Cut a Deal
17% of 18 decks +15% synergy
Day of Judgment
15% of 20 decks +14% synergy
Winds of Abandon
15% of 20 decks +14% synergy
Steelshaper's Gift
15% of 20 decks +14% synergy
Farewell
15% of 20 decks +9% synergy
Utility Artifacts
Moonsilver Key
55% of 20 decks +53% synergy
Lightning Greaves
55% of 20 decks +30% synergy
Wand of Wonder
50% of 10 decks +49% synergy
Rings of Brighthearth
50% of 20 decks +48% synergy
Skullclamp
50% of 20 decks +37% synergy
Maskwood Nexus
45% of 20 decks +42% synergy
The One Ring
38% of 8 decks +29% synergy
Diviner's Wand
35% of 20 decks +35% synergy
Reito Lantern
30% of 20 decks +30% synergy
Journeyer's Kite
30% of 20 decks +30% synergy
Bag of Holding
30% of 20 decks +29% synergy
Thousand-Year Elixir
30% of 20 decks +28% synergy
Swiftfoot Boots
30% of 20 decks +2% synergy
Heartstone
25% of 20 decks +24% synergy
Sword of the Paruns
20% of 20 decks +20% synergy
Halo Fountain
17% of 18 decks +15% synergy
Coat of Arms
15% of 20 decks +13% synergy
Expedition Map
15% of 20 decks +12% synergy
Sword of the Animist
15% of 20 decks +10% synergy
Enchantments
Animal Boneyard
40% of 20 decks +40% synergy
Pariah
40% of 20 decks +40% synergy
Tocasia's Welcome
36% of 14 decks +34% synergy
Mobilization
35% of 20 decks +35% synergy
Smothering Tithe
35% of 20 decks +23% synergy
Luminarch Ascension
30% of 20 decks +29% synergy
Darksteel Mutation
20% of 20 decks +17% synergy
Authority of the Consuls
15% of 20 decks +13% synergy
Land Tax
15% of 20 decks +12% synergy
Blind Obedience
15% of 20 decks +12% synergy
Utility Lands
Buried Ruin
50% of 20 decks +45% synergy
War Room
50% of 20 decks +43% synergy
Miren, the Moaning Well
45% of 20 decks +45% synergy
Axgard Armory
36% of 11 decks +36% synergy
Castle Ardenvale
35% of 20 decks +33% synergy
Ancient Den
30% of 20 decks +27% synergy
Nykthos, Shrine to Nyx
30% of 20 decks +24% synergy
Great Furnace
27% of 11 decks +24% synergy
Diamond Valley
25% of 20 decks +25% synergy
Mistveil Plains
25% of 20 decks +24% synergy
Ancient Tomb
25% of 20 decks +14% synergy
Blast Zone
20% of 20 decks +19% synergy
Inventors' Fair
20% of 20 decks +16% synergy
Urza's Saga
20% of 20 decks +13% synergy
Emeria, the Sky Ruin
15% of 20 decks +13% synergy
Darksteel Citadel
15% of 20 decks +11% synergy
Eiganjo, Seat of the Empire
15% of 20 decks +11% synergy
Mana Artifacts
Sol Ring
100% of 20 decks +15% synergy
Boros Signet
91% of 11 decks +86% synergy
Arcane Signet
75% of 20 decks +3% synergy
Paradise Mantle
50% of 20 decks +49% synergy
Thran Dynamo
50% of 20 decks +45% synergy
Thran Turbine
35% of 20 decks +35% synergy
Gemstone Array
30% of 20 decks +30% synergy
Talisman of Conviction
27% of 11 decks +22% synergy
Mind Stone
20% of 20 decks +2% synergy
Nyx Lotus
15% of 20 decks +13% synergy
Jeweled Lotus
15% of 20 decks +7% synergy
Mana Crypt
15% of 20 decks +4% synergy
Lands
Battlefield Forge
100% of 11 decks +94% synergy
Clifftop Retreat
82% of 11 decks +76% synergy
Lorehold Campus
55% of 11 decks +54% synergy
Command Tower
50% of 20 decks -24% synergy
Needleverge Pathway
45% of 11 decks +43% synergy
Temple of Triumph
45% of 11 decks +42% synergy
Rugged Prairie
36% of 11 decks +34% synergy
Spectator Seating
36% of 11 decks +31% synergy
Sacred Foundry
36% of 11 decks +28% synergy
Cavern of Souls
25% of 20 decks +18% synergy
Arid Mesa
25% of 20 decks +14% synergy
Myriad Landscape
25% of 20 decks +5% synergy
Flagstones of Trokair
15% of 20 decks +14% synergy
Prismatic Vista
15% of 20 decks +9% synergy
Windswept Heath
15% of 20 decks +5% synergy
Flooded Strand
15% of 20 decks +5% synergy
Marsh Flats
15% of 20 decks +4% synergy