First printed in The Lost Caverns of Ixalan (2023)
Instant
The owner of target artifact or creature with mana value 1 or greater shuffles it into their library. Then that player discovers X, where X is its mana value. (They exile cards from the top of their library until they exile a nonland card with that mana value or less. They cast it without paying its mana cost or put it into their hand. They put the rest on the bottom in a random order.)
- Illustrated by
- Néstor Ossandón Leal
Legality
- Legal in
- Standard, Pioneer, Modern, Legacy, Vintage, Future Standard, Historic, Timeless, Gladiator, Commander, Duel Commander, Tiny Leaders, Oathbreaker, Brawl, Standard Brawl, Competitive Brawl
- Not legal in
- Pauper, Alchemy, Penny Dreadful, Premodern, Old School 93/94, Pauper Commander, PreDH
Rulings (10)
- If the target artifact or creature has X in its mana cost, that X is 0 when determining its mana value.
- The mana value of a split card is determined by the combined mana cost of its two halves. If discover allows you to cast a split card, you may cast either half (as long as its mana value is less than or equal to the effect's discover value) but not both halves.
- You exile the cards face up. All players will be able to see them.
- Some spells and abilities that cause you to discover may require targets. If each target chosen is an illegal target as that spell or ability tries to resolve, it won't resolve and you won't discover.
- If the discovered card has
in its mana cost, you must choose 0 as the value of X when casting it without paying its mana cost. - If you discover an adventurer card, split card, or modal double-faced card, you might be able to cast that card with either set of characteristics depending on the effect's discover value. For example, if you discover 4 and reveal Galvanic Giant (an adventurer card from Wilds of Eldraine with a mana value of 4), you could cast Galvanic Giant, but not Storm Reading (its Adventure, which has a mana value of 7). If you discover 7 and reveal Galvanic Giant, you could cast either Galvanic Giant or Storm Reading.
- If you cast a spell "without paying its mana cost", you can't choose to cast it for any alternative costs. You can, however, pay additional costs. If the spell has any mandatory additional costs, you must pay those to cast it.
- A spell's mana value is determined only by its mana cost. Ignore any alternative costs, additional costs, cost increases, or cost reductions.
- If you can't cast the discovered card (perhaps because there are no legal targets for the spell), you'll put it into your hand.
- When you discover, you must exile cards. The only optional part of the ability is whether you cast the exiled card or put it into your hand.
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).
| Set | GIH WR | vs set | IWD | Games |
|---|---|---|---|---|
| The Lost Caverns of Ixalan (LCI), Premier Draft | 43.9% | -11.4 | -7.9 | 1582 |
- 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
