Sylcion, Spirit of the Sky

Flying (This creature can only be blocked by
creatures with flying and/or reach.)
When this creature enters the battlefield,
sacrifice target creature. Create a token that is a
copy of that creature. It gains flying and haste. Sacrifice it at the beginning of the next end step.
Afterlife 1 (When this creature dies, create a 1/1
white and black Spirit creature token with flying.)