Kirol, Attentive First-Year, Midnight Guard, and Teleportation Circle

Prerequisites

• Kirol, Attentive First-Year on the battlefield
• Midnight Guard on the battlefield
• Teleportation Circle on the battlefield

Steps

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

Results

• Infinite ETB
• Infinite LTB