Darksteel Sentinel (SOM) #152 [EN/N]

{6} · Artifact Creature — Golem · 3/3 · Flash (You may cast this spell any time you could cast an instant.) Vigilance Indestructible (Damage and effects that say "destroy" don't destroy this creature. If its toughness is 0 or less, it's still put into its owner's graveyard.) · Illustrated by Erica Yang · Scars of Mirrodin #152 · EDHREC rank 15523 · Magic: The Gathering, MTG