Mikaeus, the Unhallowed, Ashcloud Phoenix, and Blasting Station

Prerequisites

• Mikaeus, the Unhallowed on the battlefield
• Ashcloud Phoenix on the battlefield
• Blasting Station on the battlefield

Steps

1. Activate Blasting Station by tapping it and sacrificing Ashcloud Phoenix
2. When Ashcloud Phoenix dies, it triggers, as well as its undying ability if it does not have a +1/+1 counter on it
3. Resolve the first trigger, returning it from your graveyard to the battlefield face-down
4. When Ashcloud Phoenix enters the battlefield face-down as a 2/2 creature, Blasting Station triggers, untapping Blasting Station
5. Resolve the second Ashcloud Phoenix trigger, doing nothing
6. Activate Blasting Station by tapping it and sacrificing Ashcloud Phoenix
7. When Ashcloud Phoenix dies, it triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it
8. When Ashcloud Phoenix enters the battlefield, Blasting Station triggers, untapping Blasting Station
9. Resolve the Blasting Station abilities from steps 1 and 6, dealing 2 damage to any target
10. Repeat

Results

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