Wispweaver Angel | Progenitor Mimic

Cards

Cast
Progenitor Mimic by paying ({4} magic symbol) ({G} magic symbol) ({U} magic symbol) , choosing to have it enter the battlefield as a copy of
Wispweaver Angel.
When
Progenitor Mimic enters the battlefield, it triggers, blinking
Wispweaver Angel.
When
Wispweaver Angel enters the battlefield, it triggers, blinking
Progenitor Mimic, with
Progenitor Mimic entering the battlefield as a copy of
Wispweaver Angel.
Repeat from step 2.