Errant and Giada, Mortuary, Ashnod's Altar, and Roterothopter

Prerequisites

• Errant and Giada on the battlefield
• Mortuary on the battlefield
• Ashnod's Altar on the battlefield
• Roterothopter on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Roterothopter, adding
2. When Roterothopter dies, Mortuary triggers, putting Roterothopter on top of your library from your graveyard
3. Cast Roterothopter from the top of your library by paying
4. Repeat

Results

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