Deceptive Frostkite, and Wispweaver Angel

Prerequisites

• Deceptive Frostkite in hand
• Wispweaver Angel on the battlefield

Steps

1. Cast Deceptive Frostkite by paying its mana cost, choosing to have it enter the battlefield as a copy of Wispweaver Angel When Deceptive Frostkite enters the battlefield, it triggers, blinking Wispweaver Angel
2. When Wispweaver Angel enters the battlefield, it triggers, blinking Deceptive Frostkite
3. Choose to have Deceptive Frostkite enter the battlefield as a copy of Wispweaver Angel
4. Repeat from step 2

Results

• Infinite LTB
• Infinite ETB