Agrus Kos, Spirit of Justice (MKM 383)

Legendary Creature — Spirit Detective • Mana cost: {2}{R}{W} • Murders at Karlov Manor • Mythic

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.)

Illustrated by Cosmin Podar.