Blasting Station, and Cathars' Crusade

Prerequisites

• Blasting Station on the battlefield
• Cathars' Crusade on the battlefield

Steps

1. Activate Blasting Station by tapping it and sacrificing the persist creature
2. When the persist creature dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
3. When the persist creature enters, Blasting Station and Cathars' Crusade trigger
4. Resolve the Cathars' Crusade trigger, putting a +1/+1 counter on each creature you control
5. Resolve the Blasting Station trigger, untapping it
6. Resolve the Blasting Station ability from step 1
7. Repeat

Results

• Infinite damage
• Infinite death triggers
• Infinite +1/+1 counters on most creatures you control
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers