Library
Library Price Summary
As of Jul 28, 2026, the cheapest tracked printing of Library is $0.38 (CLU #18, Borderless). The benchmark price (cheapest playable nonfoil) is $0.38, up 2.7% over 7 days, up 2.7% over 30 days, up 5.6% over 90 days. All-time tracked high: $0.61 (2025).
Library Printings & Prices
Library has 1 tracked printing across 1 sets, in nonfoil finishes, including borderless treatments.
Sell Library: Buylist Offers
Card Kingdom currently pays $0.04 cash for CLU #18; the retail-buylist spread on that printing is 90% (wide).
| Buyer | Printing | Finish | Cash offer | Retail | Spread |
|---|---|---|---|---|---|
| CoolStuffInc | CLU #18 | Nonfoil | $0.05 | — | — |
| Card Kingdom | CLU #18 | Nonfoil | $0.04 | $0.39 | 90% |
Library Rules Text & Legality
This land enters tapped.
{T}: Add {U} or {R}.
{4}, {T}: Investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")
Library is legal in Legacy and Commander, and not legal in Standard, Pioneer, Modern and Pauper.
Library Rulings
- Feb 2, 2024 Clue is an artifact type. Even though it appears on some cards with other permanent types, it's never a creature type, a land type, or anything but an artifact type.
- Feb 2, 2024 If an effect refers to a Clue, it means any Clue artifact, not just a Clue artifact token. For example, you can sacrifice Wrench to pay for Alquist Proft, Master Sleuth's activated ability.
- Feb 2, 2024 Some abilities trigger "whenever you sacrifice a Clue". Those abilities trigger whenever you sacrifice a Clue for any reason, not just to activate a Clue's activated ability.
- Feb 2, 2024 Some spells and abilities that investigate may require targets. If each target chosen is an illegal target as that spell or ability tries to resolve, it won't resolve. You won't create any Clue tokens.
- Feb 2, 2024 You can't sacrifice a Clue to pay multiple costs. For example, you can't sacrifice a Clue token to activate its own ability and also to activate Alquist Proft, Master Sleuth's ability.
Reprints & Reprint Risk
Library has been reprinted 1 time. The Ravnica: Clue Edition reprint cut the price 93% in 30 days.
| Set | Date | Rarity | Treatment | Price before | Day 1 | 30 days | 90 days |
|---|---|---|---|---|---|---|---|
| CLU #18 | 2024-02-23 | Uncommon | Borderless | $4.00 | $2.75 | $0.28 | $0.14 |
CLU #18 Library in Commander
Library is the #13,470 most-played card on EDHREC, down 113 places over the last 30 days.
Library FAQ
How much is Library worth?
Library is worth about $0.38 for its cheapest playable printing as of Jul 28, 2026.
Is Library legal in Commander?
Yes — Library is legal in Commander. It is also legal in Legacy.
Has Library been reprinted?
Yes — Library has been reprinted 1 time, with 1 printings tracked on The Index.
Why is Library cheap?
Library trades at about $0.38 — 1 reprint keeps supply plentiful, and Commander demand is modest (#13,470 on EDHREC).