Asriel, Universe Controller

Indestructible, Hexproof, Flying, Trample
During your main phase, you may detain any number of nonland permanents. If you do, for each permanent, put a 1/1 Spirit creature token onto the battlefield under that permanent's owner's control.
{0}: Transform Asriel, Universe Controller.
(Transforms from and into Asriel, God of Hyperdeath.)