Ahtal-Ka, Pavilion Mantis

When Ahtal-Ka, Pavilion Mantis enters or is turned face up, return target noncreature, non-Vehicle artifact from your graveyard to the battlefield, except its an Equipment in addition to its other types and gains "Equipped creature gets +X/+0, where X is equal to this artifact's converted mana cost." Attach it to Ahtal-Ka.

When Ahtal-Ka dies, if it was equipped and wasn't sacrificed, return it to the battlefield face down. It's a 10/10 colorless artifact creature named Ahtal-Neset with trample
and "W