Tabithia, One with the Edge

{3}: Until the end of your next turn, Tabithia, One with the Edge becomes a legendary artifact Equipment with equip {0} and "Equipped creature gets +4/+4 and has first strike and
vigilance."
Whenever Tabithia is put into a graveyard from the battlefield, if it was an artifact, return it to your hand at the beginning of the next end step.