Cayth, Famed Mechanist, and Blasting Station

Prerequisites

• Cayth, Famed Mechanist on the battlefield
• Blasting Station on the battlefield
• The persist creature does not have a -1/-1 counter on it

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 the battlefield, its fabricate ability and Blasting Station trigger
4. Resolve the persist creature's fabricate 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