Titanforge Mech, Power Engine

Artifact spells and artifact creature spells you cast cost {2} less to cast.
Whenever Titanforge Mech attacks or blocks, you may return target artifact or artifact creature card with mana value {3} or less from your graveyard to your hand.
Switch - {3}{w}: Titanforge Mech switches its power and toughness until end of turn.
When Titanforge Mech’s power is 8 or greater, it gains vigilance.
“To all who see it, an unbreakable marvel; to me, an endless source of new potential.”