Darksteel Sentinel

Artifact Creature — Golem

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 (SOM)

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