Clone, and Wispweaver Angel

Prerequisites

• Clone in hand
• Wispweaver Angel on the battlefield

Steps

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

Results

• Infinite ETB
• Infinite LTB