Putrid Goblin + First Day of Class + Carrion Feeder
Putrid Goblin
First Day of Class
Carrion Feeder
Requires
Putrid Goblin must be on the battlefield.
First Day of Class must be in hand.
Carrion Feeder must be on the battlefield.
Mana needed: 
Steps
- Cast First Day of Class by paying , causing all creatures that enter the battlefield under your control this turn to get an additional +1/+1 counter put on it.
- Activate Carrion Feeder by sacrificing Putrid Goblin.
- Putrid Goblin's persist ability triggers, returning itself from your graveyard to the battlefield with a -1/-1 counter on it.
- Putrid Goblin enters the battlefield, triggering First Day of Class, putting a +1/+1 counter on Putrid Goblin.
- Resolve the Carrion Feeder ability from step 2, putting a +1/+1 counter on it.
- Repeat from step 2.
Results
Infinite +1/+1 counters on Carrion Feeder. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.
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Uncivil Unrest
9% of 700 decks
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Fanatical Devotion
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Deafening Silence
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Food Chain
7% of 109 decks
+6% synergy
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The Meathook Massacre
6% of 700 decks
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Planeswalkers
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Rogue's Passage
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Mana Artifacts
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Arcane Signet
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Talisman of Indulgence
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Talisman of Creativity
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Fellwar Stone
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Dimir Signet
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Talisman of Hierarchy
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Talisman of Conviction
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Orzhov Signet
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Boros Signet
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Golgari Signet
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Talisman of Resilience
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Talisman of Impulse
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Mana Crypt
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Springleaf Drum
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Marble Diamond
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+2% synergy
Thought Vessel
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-12% synergy
Sky Diamond
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+1% synergy
Lands
Command Tower
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+13% synergy
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+19% synergy
Godless Shrine
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+14% synergy
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Dragonskull Summit
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+15% synergy
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Blood Crypt
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+5% synergy
Llanowar Wastes
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+17% synergy
Overgrown Tomb
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+1% synergy
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+11% synergy
Savage Lands
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+16% synergy
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Luxury Suite
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+11% synergy
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-3% synergy
Bloodstained Mire
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+26% synergy
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+8% synergy
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+3% synergy
Tainted Peak
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+22% synergy
Woodland Cemetery
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+11% synergy
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+10% synergy
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+7% synergy
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+9% synergy
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