Masticore, Polyraptor, and Ashnod's Altar

Prerequisites

• Masticore on the battlefield
• Polyraptor on the battlefield
• Ashnod's Altar on the battlefield
• available

Steps

1. Activate Masticore's first ability by paying , dealing 1 damage to Polyraptor
2. Polyraptor triggers, creating a token copy of itself
3. Activate Ashnod's Altar by sacrificing the damaged Polyraptor, adding
4. Repeat

Results

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