{"id":1952,"date":"2026-10-17T06:55:45","date_gmt":"2026-10-17T06:55:45","guid":{"rendered":"https:\/\/krakenthemeta.com\/blog\/mtg-discover\/"},"modified":"2026-10-18T06:52:33","modified_gmt":"2026-10-18T06:52:33","slug":"mtg-discover","status":"publish","type":"post","link":"https:\/\/krakenthemeta.com\/blog\/mtg-discover\/","title":{"rendered":"MTG Discover Explained: How Discover Works, What It Actually Hits, Every Discover Card and an $83 Pantlaza Deck (2026)"},"content":{"rendered":"

Discover<\/strong> is a Magic: The Gathering keyword action from The Lost Caverns of Ixalan (November 2023). Discover N means: exile cards from the top of your library until you exile a nonland card with mana value N or less, then cast it for free or put it into your hand.<\/strong> Everything else you exiled goes to the bottom of your library in a random order. It is cascade’s younger cousin, with two upgrades: you can keep the card instead of casting it, and it can come from any trigger or ability, not only from casting a spell.<\/p>\n\n

The part most guides get wrong is the number. Discover 5 does not find a five-drop. It finds the first<\/strong> nonland card that costs 5 or less, and in a normal deck that is usually a two- or three-drop. We ran 100,000 discovers at every value through a real 100-card Commander deck: discover 5 hit a card costing exactly 5 only 14.1% of the time, and discover 10 averaged a card with mana value 3.81.<\/strong> The number is a ceiling, not a target.<\/p>\n\n

There are 31 Commander-legal cards that discover<\/strong> or repeat it, and one more (Ashaya’s Enduring Bond) on the way. This guide covers the rule word for word, every ruling that comes up at the table, what discover actually hits, discover against cascade, every discover card ranked by how much it is played, legality in every format, and an $82.76 budget Pantlaza, Sun-Favored deck<\/strong>.<\/p>\n\n

What is discover in MTG?<\/h2>\n\n

The Comprehensive Rules (effective 25 September 2026) define it in rule 701.57:<\/p>\n\n

701.57a “Discover N” means “Exile cards from the top of your library until you exile a nonland card with mana value N or less. You may cast that card without paying its mana cost if the resulting spell’s mana value is less than or equal to N. If you don’t cast it, put that card into your hand. Put the remaining exiled cards on the bottom of your library in a random order.”<\/p>\n

701.57b A player has “discovered” after the process described in 701.57a is complete, even if some or all of those actions were impossible.<\/p>\n

701.57c If the final card exiled during the process described in rule 701.57a has mana value N or less, it is the “discovered card,” regardless of whether it was cast or put into a player’s hand.<\/p><\/blockquote>\n\n

In plain steps:<\/p>\n\n

    \n
  1. Exile cards from the top of your library, face up, one at a time.<\/li>\n
  2. Stop at the first nonland<\/strong> card whose mana value is N or less<\/strong>. Lands and cards that cost more than N are skipped.<\/li>\n
  3. Cast that card without paying its mana cost, or<\/strong> put it into your hand. Your choice.<\/li>\n
  4. Put every other exiled card on the bottom of your library in a random order.<\/li>\n<\/ol>\n\n

    Discover is a keyword action<\/em>, like scry or investigate, not a keyword ability. A card never “has discover”; an effect tells you to discover. That is why it shows up on spells, creature triggers, an equipment, a planeswalker, five lands and an end-step artifact.<\/p>\n\n

    \"A
    Trumpeting Carnosaur discovers 5 when it enters and is in 98,841 Commander decks on EDHREC. Art by Lars Grant-West. Image via Scryfall; \u00a9 Wizards of the Coast.<\/figcaption><\/figure>\n\n

    How discover works: the rulings that come up<\/h2>\n\n

    The Lost Caverns of Ixalan release notes answer almost every table argument. The ones worth knowing:<\/p>\n\n

    You must exile; only the last step is a choice<\/h3>\n

    The release notes put it plainly: “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.” You cannot decline to discover once the effect resolves. (Pantlaza is the exception: its trigger says “you may<\/em> discover”, so you can say no to the whole thing.)<\/p>\n\n

    Cast it now or keep it, never both<\/h3>\n

    If you cast the card, it goes on the stack right away, in the middle of the resolving effect, ignoring timing rules. A sorcery or creature can be cast on an opponent’s turn this way. Miracle<\/a> uses the same rule: the card is cast while the trigger resolves, whatever its type. If you would rather hold it (a removal spell with no good target, a counterspell you want to keep up), it goes to your hand and you pay full price later.<\/p>\n\n

    If you can’t cast it, it goes to your hand<\/h3>\n

    “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.” A discovered Swords to Plowshares with no creature on the battlefield is not lost.<\/p>\n\n

    X is 0, and there are no alternative costs<\/h3>\n

    A discovered card with {X} in its cost is cast with X = 0, so a discovered Hydroid Krasis or Genesis Wave does almost nothing. Casting “without paying its mana cost” also rules out alternative costs such as evoke, overload, dash or blitz. You can pay optional additional costs like kicker, and you must pay mandatory ones (a card that says “as an additional cost, sacrifice a creature” still needs the sacrifice).<\/p>\n\n

    Split, adventure and double-faced cards<\/h3>\n

    A split card’s mana value is the total of both halves. You can cast either half as long as its mana value is N or less, but not both. With adventure cards and modal double-faced cards, you can use whichever face fits under N; the rulings’ example is discovering 4 into Galvanic Giant, whose creature side is too expensive but whose adventure fits.<\/p>\n\n

    “Discovered” happens even when nothing is found<\/h3>\n

    Rule 701.57b: you have discovered once the process is complete “even if some or all of those actions were impossible.” If your library runs out of eligible cards, you still discovered, which matters for Curator of Sun’s Creation and anything else that triggers “whenever you discover”.<\/p>\n\n

    Everyone sees the cards<\/h3>\n

    The cards are exiled face up. Every player sees what you skipped over and what went to the bottom.<\/p>\n\n

    What discover actually hits: 100,000 discovers in a real deck<\/h2>\n\n

    Because discover stops at the first eligible card, what you get depends far more on your deck’s curve than on N. To measure it, we took the budget Pantlaza deck at the end of this guide (63 nonland cards and 36 lands in the 99), shuffled it 100,000 times for each value of N, and discovered from the top.<\/p>\n\n\n\n
    Discover N<\/th>Average mana value hit<\/th>As a share of N<\/th>Hit costs exactly N<\/th>Cards exiled on average<\/th>Hit is a Dinosaur<\/th><\/tr><\/thead>
    Discover 2<\/td>1.65<\/td>82%<\/td>64.7%<\/td>5.54<\/td>23.4%<\/td><\/tr>\n
    Discover 3<\/td>2.3<\/td>77%<\/td>48.6%<\/td>2.96<\/td>30.2%<\/td><\/tr>\n
    Discover 4<\/td>2.67<\/td>67%<\/td>21.3%<\/td>2.32<\/td>35.9%<\/td><\/tr>\n
    Discover 5<\/td>2.99<\/td>60%<\/td>14.1%<\/td>1.99<\/td>42.5%<\/td><\/tr>\n
    Discover 6<\/td>3.42<\/td>57%<\/td>14.1%<\/td>1.73<\/td>47.2%<\/td><\/tr>\n
    Discover 7<\/td>3.54<\/td>51%<\/td>3.3%<\/td>1.67<\/td>47.2%<\/td><\/tr>\n
    Discover 8<\/td>3.62<\/td>45%<\/td>1.7%<\/td>1.64<\/td>48.5%<\/td><\/tr>\n
    Discover 9<\/td>3.79<\/td>42%<\/td>3.2%<\/td>1.59<\/td>48.5%<\/td><\/tr>\n
    Discover 10<\/td>3.81<\/td>38%<\/td>0%<\/td>1.59<\/td>48.7%<\/td><\/tr>\n<\/tbody><\/table>\n\n

    What the numbers say:<\/p>\n\n