“"Halt, traveler. Whatever you seek, you will not find it here."”
Vigilance
Explore
Sentinel of the Nameless City
Card Rules and Details
Card Type: Creature — Merfolk Warrior Scout
Mana Cost: {2}{G}
Oracle Rules Text: 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.")
Flavor Text: "Halt, traveler. Whatever you seek, you will not find it here."
Set: The Lost Caverns of Ixalan (#211), Rarity: Rare, Artist: Josu Hernaiz
Creature
Green
Rare
$0.44
Regular
$0.54
✨ Foil
€0.53
Euro
Prices as of Sep 02, 2026. Market values fluctuate; double-check current pricing before purchasing.
Historical Printings & Sets (1)
1 Languages
Official Rulings (7)
2023-11-10
Some spells or abilities might cause a creature to explore multiple times in a row. If you reveal a nonland card when a creature explores and leave it on top of your library, then the creature explores again immediately afterwards, you'll reveal the same card again.
2023-11-10
If a resolving spell or ability instructs a specific creature to explore but that creature has left the battlefield, the creature still explores. If you reveal a nonland card this way, you won't put a +1/+1 counter on anything, but you may put the revealed card into your graveyard. Effects that trigger "whenever a creature explores" trigger as appropriate.
2023-11-10
In some unusual cases, noncreature permanents may explore. For example, if the creature card returned by Defossilize is somehow not a creature once it's on the battlefield, it can still explore. You'll take all the same actions, and you may end up putting a +1/+1 counter on the permanent. (Note that some effects target a creature, and those effects would still require a legal target to have it explore.)
2023-11-10
If an ability instructs a creature to explore, its controller reveals the top card of their library. If it's a land card, they'll put it into their hand. Otherwise, they'll put a +1/+1 counter on that creature, then choose to either leave that card on top of their library or put it into their graveyard.
2023-11-10
Map tokens are a kind of predefined token. Each one is a colorless artifact with the artifact subtype Map and the ability "{1}, {T}, Sacrifice this artifact: Target creature you control explores. Activate only as a sorcery."
2023-11-10
Once an ability that causes a creature to explore begins to resolve, no player may take any other actions until it's done. Notably, opponents can't try to remove the exploring creature after you reveal a nonland card but before it receives a counter.
2023-11-10
If no card is revealed, most likely because that player's library is empty, the exploring creature receives a +1/+1 counter.
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