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.
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.
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.)
Last observed on Scryfall 2 months ago at $0.23. Over the trailing 90 days the price moved between $0.01 and $0.49 across 428 observations. Cross-checked across TCGplayer, eBay sold, Cardmarket EU, and Star City.
This printing is one of 3 catalogued treatments from LCI — the lineup includes Foil and Nonfoil alongside the standard finish. Across our catalog the Rarix library tracks every variant in the same family so collectors can compare price, scarcity and demand inside a single lineage.
Card #65 of *The Lost Caverns of Ixalan*, the set that shipped alongside the November 2023 The Lost Caverns of Ixalan release.
Card type: Creature — Merfolk Scout, color identity blue, printed at uncommon. Uncommons fill the middle-tier slots in a standard booster configuration. Mana cost: {2}{U} (3 converted). Keyword abilities: Explore.
Legal across the major constructed formats — Modern, Legacy, Vintage, and Commander — plus Standard rotation play.
EDHrec ranks this card #9,492 in Commander, putting it in the niche-pick tier of the format's playable pool.
Illustrated by Fesbra. Rarix catalogs 37 other cards credited to this artist.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Fesbra
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
If a creature leaves the battlefield before an effect instructs it to explore, it still explores. Abilities like Merfolk Cave-Diver's that trigger whenever a creature you control explores will still trigger.
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.
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.
If no card is revealed, most likely because that player's library is empty, the exploring creature receives a +1/+1 counter.
