Sentinel of the Nameless City (LCI) #211 [EN/F]

{2}{G} · Creature — Merfolk Warrior Scout · 3/4 · Vigilance Whenever this creature enters or attacks, create a Map token. (It's an artifact with "{1}, {T}, Sacrifice this token: Target creature you control explores. Activate only as a sorcery.") · "Halt, traveler. Whatever you seek, you will not find it here." · Illustrated by Josu Hernaiz · The Lost Caverns of Ixalan #211 · EDHREC rank 11503 · Magic: The Gathering, MTG