Blasting Station, Thran Vigil, and Safehold Elite

Prerequisites

• Blasting Station on the battlefield
• Thran Vigil on the battlefield
• Safehold Elite on the battlefield

Steps

1. Activate Blasting Station by tapping it and sacrificing Safehold Elite
2. When Safehold Elite dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
3. Thran Vigil and Blasting Station trigger
4. Resolve the Thran Vigil trigger, putting a +1/+1 counter on Safehold Elite
5. Resolve the Blasting Station trigger, untapping it
6. Resolve the Blasting Station ability from step 1
7. Repeat

Results

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