Agrus Kos, Spirit of Justice - 184 M MKM

Double strike, vigilance
Whenever Agrus Kos enters or attacks, choose up to one target creature. If it's suspected, exile it. Otherwise, suspect it. (A suspected creature has menace and can't block.)
"Eventually I'll give retirement another shot. But not today."
mythic
Legendary Creature — Spirit Detective
From the Magic: The Gathering set Murders at Karlov Manor.