Sakashima of a Thousand Faces in hand or in the command zone.
({3} magic symbol) ({U} magic symbol) plus enough mana to pay for commander tax, if applicable available.
Steps
Cast Sakashima of a Thousand Faces either from your hand or from the command zone by paying ({3} magic symbol) ({U} magic symbol) plus commander tax, if applicable, choosing to have it enter the battlefield as a copy of Wispweaver Angel.
When Sakashima of a Thousand Faces enters the battlefield, it triggers, blinking Wispweaver Angel.
When Wispweaver Angel enters the battlefield, it triggers, blinking Sakashima of a Thousand Faces, with Sakashima of a Thousand Faces entering the battlefield as a copy of Wispweaver Angel.