Mikaeus, the Unhallowed, Pith Driller, and Blasting Station

Prerequisites

• Mikaeus, the Unhallowed on the battlefield
• Pith Driller on the battlefield
• Blasting Station on the battlefield
• Pith Driller does not have a +1/+1 counter on it

Steps

1. Activate Blasting Station by tapping it and sacrifiicing Pith Driller
2. When Pith Driller dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it
3. When Pith Driller enters the battlefield, it and Blasting Station trigger
4. Resolve the Pith Driller trigger, putting a -1/-1 counter on it
5. Resolve the Blasting Station trigger from step 3, untapping it
6. Resolve the Blasting Station ability from step 1, dealing 1 damage to any target
7. Repeat

Results

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