Cocoon

Enchant creature you control<br>When Cocoon enters, tap enchanted creature and put three pupa counters on Cocoon.<br>Enchanted creature doesn't untap during your untap step if Cocoon has a pupa counter on it.<br>At the beginning of your upkeep, remove a pupa counter from Cocoon. If you can't, sacrifice it, put a +1/+1 counter on enchanted creature, and that creature gains flying.