Putrid Goblin + First Day of Class + Carrion Feeder

Prerequisites

• Putrid Goblin does not have a -1/-1 counter on it.

Steps

1. 1Cast 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.
2. 2Activate Carrion Feeder by sacrificing Putrid Goblin.
3. 3Putrid Goblin's persist ability triggers, returning itself from your graveyard to the battlefield with a -1/-1 counter on it.
4. 4Putrid Goblin enters the battlefield, triggering First Day of Class, putting a +1/+1 counter on Putrid Goblin.
5. 5Resolve the Carrion Feeder ability from step 2, putting a +1/+1 counter on it.
6. 6Repeat from step 2.

Effects

• Infinite +1/+1 counters on a creature
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers