Whenever a creature you control attacks, it
(While it's phased out, it's treated as though it doesn't exist. It phases in before you untap during your next untap step.)
at end of combat.
The information presented on this site about Magic: The Gathering, both literal and graphical, is copyrighted by Wizards of the Coast. This website is not produced, endorsed, supported, or affiliated with Wizards of the Coast.