Kirol, Attentive First-Year, Icewind Stalwart, and Sunstrike Legionnaire

Prerequisites

• Kirol, Attentive First-Year on the battlefield
• Icewind Stalwart in hand
• Sunstrike Legionnaire on the battlefield
• available

Steps

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

Results

• Infinite ETB
• Infinite LTB