Gris, Automaton Priestess

Covet Artifact Creature (At the start of the game
if this is your Commander you may chose one Artifact
Creature card in your library and exile it. It has
Coveted for the rest of the game. When you cast this
you may put cards exiled this way into your hand.)
{2}{w/b}{t}: Target Artifact Creature becomes
Coveted. This effect persists between zones.
Coveted Artifact Creatures you control gain
hexproof.