Artifact
English Oracle text
As this artifact enters, choose artifact, creature, enchantment, instant, or sorcery.
Spells you cast of the chosen type cost 
less to cast.
它转动所发出的乐音，能触动启示的机栓。Printed text
神器
于云钥进战场时，选择神器，生物，结界，瞬间或法术。
你施放的该类别咒语减少来施放。
云钥
Artwork unavailable- wotc
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as a flashback cost), add any cost increases (such as kicker costs), then apply any cost reductions (such as that of Cloud Key's ability). The mana value of the spell is determined by only its mana cost, no matter what the total cost to cast that spell was.
- wotc
The cost reduction applies only to generic mana in the cost of spells of the chosen type you cast.
Format legality
Legality follows the dated Scryfall catalog snapshot.
For draft and prerelease, check the event’s release and rules. Missing statuses stay unavailable.
Official Magic rules| Format | Status |
|---|---|
| Standard | Not legal |
| Pioneer | Not legal |
| Modern | Legal |
| Legacy | Legal |
| Vintage | Legal |
| Commander | Legal |
| Oathbreaker | Legal |
| Alchemy | Not legal |
| Historic | Legal |
| Brawl | Legal |
| Comp. Brawl | Legal |
| Timeless | Legal |
| Pauper | Not legal |
| Duel | Legal |
For draft and prerelease, check the event’s release and rules.
Viewing this printing
About this printingSet, collector number and language identify this edition. Reference prices are dated snapshots, not live offers or stock. Checked dates show successful price checks; Catalog dates show imported prices. Refresh due means an update is due. USD references come from TCGplayer; EUR references come from Cardmarket, via Scryfall. Missing prices are unavailable.
Exact product links use this printing’s imported merchant ID. Search links require you to choose the edition. Confirm finish, language, condition and shipping with the merchant.
View printing on ScryfallThe Brothers' War Retro Artifacts
Zhs · Paper · MTGO · Arena
Non-foilUnavailable
FoilUnavailable
Buy this printing
TCGplayerName search · choose edition
CardmarketName search · choose edition
Card KingdomName search · choose editionCheck finish, condition and shipping.
Printings 4
Artwork unavailableViewingCloud KeyThe Brothers' War Retro Artifacts · #12 · ZHSNon-foil / Foil
Non-foilUnavailable
FoilUnavailable
Checked
Artwork unavailableViewingCloud KeyThe Brothers' War Retro Artifacts · #75 · ZHSNon-foil / Foil
Non-foilUnavailable
FoilUnavailable
Checked
Artwork unavailableViewingCloud KeyTime Spiral Remastered · #265 · ZHSNon-foil / Foil
Non-foilUnavailable
FoilUnavailable
Checked
Artwork unavailableViewingNo printings match these filters.