Grenzo, Dungeon Warden, Ashnod's Altar, and Fell Horseman // Deathly Ride

Prerequisites

• Grenzo, Dungeon Warden on the battlefield
• Ashnod's Altar on the battlefield
• Fell Horseman // Deathly Ride on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Fell Horseman, adding
2. When Fell Horseman dies, it triggers, putting itself on the bottom of your library from your graveyard
3. Activate Grenzo by paying , putting Fell Horseman into your graveyard from the bottom of your library, and then putting it onto the battlefield
4. Repeat

Results

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