Putrid Goblin, Skirk Prospector, and First Day of Class

Prerequisites

• Putrid Goblin on the battlefield
• Skirk Prospector on the battlefield
• First Day of Class in hand
• available

Steps

1. Activate Skirk Prospector by sacrificing Putrid Goblin, adding
2. Putrid Goblin's persist ability triggers, returning it to the battlefield with a -1/-1 counter on it
3. First Day of Class triggers, putting a +1/+1 counter on Putrid Goblin and giving it haste
4. Repeat

Results

• Infinite death triggers
• Infinite creature ETB
• Infinite creature LTB
• Infinite red mana
• Infinite creature sacrifice triggers