Shep, Obsidian Shard

Vigilance. Double strike. Deathtouch.
At the start of combat on an opponent's turn,
choose target creature. This turn, that creature
can't attack if Shep, Obsidian Shard is untapped.
Eno Sandosan returned to the Empire, shamed
and scandalized by defeat in the field. The Emerald
Shogun restored the Obsidian Samurai's honor, and
expressed deep interest in his tales of the drow.