Gravecrawler, Ashnod's Altar, and Signpost Scarecrow

Prerequisites

• Gravecrawler on the battlefield
• Ashnod's Altar on the battlefield
• Signpost Scarecrow on the battlefield
• You control an additional Zombie

Steps

1. Activate Ashnod's Altar by sacrificing Gravecrawler, adding
2. Activate Signpost Scarecrow by paying , adding
3. Cast Gravecrawler from your graveyard by paying
4. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count