Rat King, Verminister, Intruder Alarm, Belonging, and Blasting Station

Prerequisites

• Rat King, Verminister on the battlefield
• Intruder Alarm on the battlefield
• Belonging in hand
• Blasting Station on the battlefield
• available

Steps

1. Cast Belonging by paying
2. When Belonging enters, it, Blasting Station and Intruder Alarm trigger
3. Resolve the Intruder Alarm trigger, untapping all creatures
4. Resolve the Blasting Station trigger, untapping it
5. Resolve the Belonging trigger, creating three 1/1 Shapeshifter creature tokens with changeling
6. When the Shapeshifters enter, Blasting Station and Intruder Alarm triggers three times each
7. Resolve all Intruder Alarm triggers, untapping all creatures three times
8. Resolve all Blasting Station triggers, untapping it
9. Activate Blasting Station by tapping it and sacrificing Belonging
10. Activate Rat King by tapping it and sacrificing the Shapeshifters, returning Belonging from your graveyard to the battlefield
11. Repeat from step 2

Results

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