Viscera Seer, Putrid Goblin, and Thran Vigil

Prerequisites

• Viscera Seer on the battlefield
• Putrid Goblin on the battlefield
• Thran Vigil on the battlefield

Steps

1. Activate Viscera Seer by sacrificing Putrid Goblin
2. When Putrid Goblin dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
3. Thran Vigil triggers, putting a +1/+1 counter on Putrid Goblin
4. Resolve the Viscera Seer ability
5. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers
• Infinite scry 1