Mikaeus, the Unhallowed, Ashnod's Altar, and Tatterkite

Prerequisites

• Mikaeus, the Unhallowed on the battlefield
• Ashnod's Altar on the battlefield
• Tatterkite on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Tatterkite, adding
2. When Tatterkite dies, its undying ability triggers, returning it to the battlefield from your graveyard with zero +1/+1 counters due to its ability
3. Repeat

Results

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