The Female Titan

Titanshift {5}{w}{r} (If you cast this spell for its Titanshift cost, put it over target Human creature you control. They Titanshift into the creature on top.)
Haste, Double Strike, Vigilance
The Female Titan has indestructible as long as it's attacking or blocking.
When The Female Titan enters the battlefield, if it was Titanshifted, destroy all artifacts.