Mikaeus, the Unhallowed, Monoskelion, and Krark-Clan Ironworks

Prerequisites

• Mikaeus, the Unhallowed on the battlefield
• Monoskelion on the battlefield
• Krark-Clan Ironworks on the battlefield

Steps

1. Activate Krark-Clan Ironworks by sacrificing Monoskelion, adding
2. When Monoskelion dies, its undying ability triggers, returning itself from your graveyard to the battlefield with two +1/+1 counters on it
3. Activate Monoskelion twice by paying and removing two +1/+1 counters from it, dealing 2 damage to any target
4. Repeat

Results

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