Kirol, Attentive First-Year, Midnight Guard, and The Mighty Thor, Jane Foster

Prerequisites

• Kirol, Attentive First-Year on the battlefield
• Midnight Guard on the battlefield
• The Mighty Thor, Jane Foster on the battlefield

Steps

1. At the beginning of your end step, The Mighty Thor triggers
2. Holding priority, activate Kirol by tapping it and Midnight Guard
3. copying The Mighty Thor's trigger, targeting Kirol
4. Resolve the copy of The Mighty Thor's trigger, blinking Kirol
5. When Kirol enters, Midnight Guard triggers, untapping Midnight Guard
6. Repeat from step 2

Results

• Infinite ETB
• Infinite LTB
• Infinite mana creatures you control can produce
• Infinite untap of creatures you control