Blasting Station, Thran Vigil, and Persistent Constrictor

Prerequisites

• Blasting Station on the battlefield
• Thran Vigil on the battlefield
• Persistent Constrictor on the battlefield

Steps

1. Activate Blasting Station by tapping it and sacrificing Persistent Constrictor
2. When Persistent Constrictor 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 Persistent Constrictor
5. Resolve the Blasting Station trigger, untapping it
6. Resolve the Blasting Station ability from step 1
7. Repeat

Results

• Infinite mana creatures you control can produce
• Infinite untap of creatures you control
• Infinite ETB
• Infinite LTB
• Infinite damage
• Infinite death triggers
• Infinite sacrifice triggers