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Merfolk Cave-Diver

First printed in The Lost Caverns of Ixalan (2023)

Merfolk Cave-Diver

Creature — Merfolk Scout

Whenever a creature you control explores, this creature gets +1/+0 until end of turn and can't be blocked this turn.

"Learn all you can of this underground sea. I suspect more secrets of our ancestors lie waiting in its depths."
—Tishana

2/4

Illustrated by
Fesbra

Legality

Rulings (7)

  • 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.)
  • 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.

Prices

MTGO price: 0.003 TIX, the cheapest non-foil print (average sell price on GoatBots, 1 Nov 2026).

In Limited on MTG Arena

Win rates in Arena drafts and sealed, retrieved from 17Lands (CC BY 4.0).

Win rates of Merfolk Cave-Diver in Limited
Set GIH WR vs set IWD Games
The Lost Caverns of Ixalan (LCI), Premier Draft 53.2% -2.1 +1.2 11548
The Lost Caverns of Ixalan (LCI), Sealed 52.8% -2.8 +0.2 572
GIH WR
win rate of the games in which the card was in the opening hand or drawn
vs set
points above or below the average win rate of all decks in the set
IWD
improvement when drawn: GIH WR minus the win rate when the card stayed in the library
Games
games in which the card was seen

Commander In 4 of 6161 decks (0.1%), most in Hakbal of the Surging Soul

Share of decks
0.1%
= vs previous 30 days
2026-08-17: 0.0% 2026-08-24: 0.0% 2026-08-31: 0.1% 2026-09-07: 0.0% 2026-09-14: 0.1% 2026-09-21: 0.1% 2026-09-28: 0.0% 2026-10-05: 0.1% 2026-10-12: 0.0% 2026-10-19: 0.0% 2026-10-26: 0.4%
Weekly, last 90 days
Decks
4
4 main, 0 sideboard
Avg. copies
1.0
in the main deck
Win rate
–
1 top 8 (challenges only)

Archetypes by metagame share

Archetype Meta Play it
Hakbal of the Surging Soul 0.1% 100%

Played together with

Card Together Lift
Topography Tracker100%1618.5
Kopala, Warden of Waves100%1618.5
Zegana, Utopian Speaker100%1618.5
Coralhelm Commander100%1618.5
Merfolk Sovereign100%1618.5
Tributary Instructor100%1618.5
Xolatoyac, the Smiling Flood100%1618.5
Surgespanner100%1618.5
Bygone Marvels100%1618.5
Deeproot Historian100%1618.5

Best win rate

No challenge results yet.

Challenges only: MTGO publishes only the 5-0 league decks.

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