Grenzo, Dungeon Warden, Ashnod's Altar, and Nissa's Chosen

Prerequisites

• Grenzo, Dungeon Warden on the battlefield
• Ashnod's Altar on the battlefield
• Nissa's Chosen on the battlefield
• Grenzo has a power of 2 or greater

Steps

1. Activate Ashnod's Altar by sacrificing Nissa's Chosen, adding
2. Nissa's Chosen is put on the bottom of your library instead of in your graveyard
3. Activate Grenzo by paying , putting Nissa's Chosen into your graveyard from the bottom of your library, and then putting it onto the battlefield
4. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers