Wispweaver Angel, and Mercurial Pretender

Prerequisites

• Wispweaver Angel on the battlefield
• Mercurial Pretender in hand
• available

Steps

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

Results

• Infinite ETB
• Infinite LTB