Kirol, Attentive First-Year, Midnight Guard, and Icewind Stalwart

Prerequisites

• Kirol, Attentive First-Year on the battlefield
• Midnight Guard on the battlefield
• Icewind Stalwart in hand
• available

Steps

1. Cast Icewind Stalwart by paying its mana cost
2. When Icewind Stalwart enters, it and Midnight Guard trigger
3. Resolve the Midnight Guard trigger, untapping it
4. Holding priority, activate Kirol by tapping it and Midnight Guard
5. copying Icewind Stalwart's trigger, targeting Kirol
6. Resolve the copy of Icewind Stalwart's trigger, blinking Kirol
7. When Kirol enters, Midnight Guard triggers, untapping Midnight Guard
8. Repeat from step 4

Results

• Infinite ETB
• Infinite LTB