Wispweaver Angel, and Dack's Duplicate

Prerequisites

• Wispweaver Angel on the battlefield
• Dack's Duplicate in hand
• available

Steps

1. Cast Dack's Duplicate by paying , choosing to have it enter the battlefield as a copy of Wispweaver Angel
2. When Dack's Duplicate enters the battlefield, it triggers, blinking Wispweaver Angel
3. When Wispweaver Angel enters the battlefield, it triggers, blinking Dack's Duplicate, with Dack's Duplicate entering the battlefield as a copy of Wispweaver Angel
4. Repeat from step 2

Results

• Infinite ETB
• Infinite LTB