Whenever Sentinel of the Nameless City enters the battlefield or attacks, create a Map token. (It's an artifact with "1, T, Sacrifice this artifact: Target creature you control explores. Activate only as a sorcery.")
"Halt, traveler. Whatever you seek, you will not find it here."
![Sentinel of the Nameless City (Promo Pack) [The Lost Caverns of Ixalan Promos]](http://paradoxtcg.com/cdn/shop/files/526824.jpg?v=1747253635&width=1445)
