Putrid Goblin + First Day of Class + Goblin Sledder

Prerequisites

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Steps

1. 1Cast First Day of Class by paying
2. 2Activate Goblin Sledder by sacrificing Putrid Goblin
3. 3When Putrid Goblin dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
4. 4When Putrid Goblin enters, First Day of Class triggers, putting a +1/+1 counter on Putrid Goblin.
5. 5Resolve the Goblin Sledder ability.
6. 6Repeat from step 2

Effects

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinitely large creatures you control until end of turn