Jadelight Spelunker
Creature — Merfolk Scout
When this creature enters, it explores X times. (To have it explore, reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on that creature, then put the card back or put it into your graveyard.)
- CMC
- 1
- Mana cost
- Color identity
- G
- Rarity
- rare
- Set
- The Lost Caverns of Ixalan
- Price
- —
- EDHREC rank
- #8696
Jadelight Spelunker lands as a repeatable explore engine on a Merfolk body — every turn it untaps, you're digging and growing simultaneously. In Rosheen, Roaring Prophet builds specifically, the X-spell synergy lets you pump its activated abilities to absurd depths, making it one of the more backbreaking value pieces available at three mana.
Best Commanders
Commanders with the highest synergy

Rosheen, Roaring Prophet
Rosheen, Roaring Prophet's ability to funnel mana into X costs turns Jadelight Spelunker from a modest value creature into a card-selection engine that scales with every extra mana you have — the synergy is direct and punishing for opponents.

Hakbal of the Surging Soul
Hakbal of the Surging Soul rewards you for exploring as often as possible, and Jadelight Spelunker does exactly that on a relevant Merfolk body, stacking counters while feeding Hakbal's landfall and tribal triggers simultaneously.

Kumena, Tyrant of Orazca
Kumena, Tyrant of Orazca wants a wide board of Merfolk to tap for value, and Jadelight Spelunker pulls double duty by contributing a body to that count while exploring to find the next piece of the engine.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | legal |
| pioneer | legal |
| standard | legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
In Commander, Jadelight Spelunker slots cleanly into any Merfolk or explore-matters deck, offering consistent card selection across a long game where incremental advantages compound. In Pioneer and Standard, it competes in a faster environment where a three-mana creature needs immediate impact — the explore trigger on entry helps, but the payoff is slower than what aggressive formats typically demand. Modern is a harder sell; the card is legal but the power bar is simply higher, and a three-mana 2/1 without haste or an enter-the-battlefield blowout rarely makes the cut. Legacy and Vintage give it access to broken mana but offer no reason to run it over more efficient options. Oathbreaker mirrors the Commander experience — fine in the right shell, unimpressive outside of it.
Key Combos
Combo lines featuring this card
Price Context
Current price
unknown tier
Pricing data for Jadelight Spelunker isn't available at the moment, so check Scryfall or your preferred retailer for the current market rate. Given its 22% inclusion rate in Hakbal of the Surging Soul decks alone and meaningful Rosheen adoption, any copy sitting near bulk is worth picking up for a Merfolk or explore build.
Explore
Sources
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.