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Library of Leng image 1 Library of Leng image 2 Library of Leng image 3 Library of Leng image 4 Library of Leng image 5 Library of Leng image 6 Library of Leng image 7 Library of Leng image 8 Library of Leng image 9 Library of Leng image 10 Library of Leng image 11 Library of Leng image 12 Library of Leng image 13
Special Guests (SPG | #158 | 2026-04-24)
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Library of Leng

1
Artifact

You have no maximum hand size.

If an effect causes you to discard a card, discard it, but you may put it on top of your library instead of into your graveyard.

$4.97 cheapest print

Prices

Set # Treatment Finish Price (USD)
30th Anniversary Edition 254 Regular Nonfoil $17.66
Limited Edition Alpha 257 Regular Nonfoil $149.00
Unlimited Edition 258 Regular Nonfoil $14.86
Collectors' Edition 258 Regular Nonfoil $8.74
Intl. Collectors' Edition 258 Regular Nonfoil $10.73
Limited Edition Beta 258 Regular Nonfoil $98.32
Revised Edition 261 Regular Nonfoil $4.97
Fourth Edition 333 Regular Nonfoil $5.16
Fifth Edition 387 Regular Nonfoil $7.79

Price History

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Rulings

2009-10-01 wotc
If multiple effects modify your hand size, apply them in timestamp order. For example, if you put Null Profusion (an enchantment that says your maximum hand size is two) onto the battlefield and then put Library of Leng onto the battlefield, you'll have no maximum hand size. However, if those permanents entered in the opposite order, your maximum hand size would be two.
2004-10-04 wotc
You can't use the Library of Leng ability to place a discarded card on top of your library when you discard a card as a cost, because costs aren't effects.
2004-10-04 wotc
You can look at a randomly discarded card before deciding where it goes.
2004-10-04 wotc
This effect has no effect on the cards being put into the graveyard from a library, because they are not "discarded".
2004-10-04 wotc
The discard triggers anything else that triggers on discards.
2004-10-04 wotc
The ability replaces the normal discard action with a discard action that puts the card on the library instead of the graveyard.
2004-10-04 wotc
The ability applies any time a spell or ability has you discard as part of its effect. It does not matter if you or your opponent control the spell or ability. The discard is forced because it is an effect.
2004-10-04 wotc
Since the card goes directly to the library, the card is not revealed unless the spell or ability requiring the discard specifically says it is.
2004-10-04 wotc
If more than one card is discarded due to a single effect, the Library allows you to decide whether or not to use it on each of the cards. You get to decide the order the cards are placed on the library if more than one goes there.

Format Legality

Standard Not Legal
Future Not Legal
Historic Not Legal
Timeless Not Legal
Gladiator Not Legal
Pioneer Not Legal
Modern Not Legal
Legacy Legal
Pauper Legal
Vintage Legal
Penny Not Legal
Commander Legal
Oathbreaker Legal
Standardbrawl Not Legal
Brawl Not Legal
Alchemy Not Legal
Paupercommander Legal
Duel Legal
Oldschool Legal
Premodern Legal
Predh Legal