Cloud Key
Artifact
FUTFuture Sight#160rare
The musical sound of its turning triggers the tumblers of revelation.
- Finishes
- Nonfoil · Foil
- Border
- black
- Frame
- 2003
- Pull rate
- about 1 per booster–1 in 1778
- Illustrator
- Trevor Hairsine
- Found in
- Future Sight MTGO Redemption · Future Sight MTGO Redemption Foil · Future Sight Booster Pack
CommanderLegalModernLegalStandardNot legal
Format legality
Constructed
StandardNot legal
PioneerNot legal
ModernLegal
LegacyLegal
VintageLegal
PauperNot legal
Commander
CommanderLegal
Pauper CommanderNot legal
Duel CommanderLegal
PreDHLegal
OathbreakerLegal
Tiny LeadersLegal
Arena
AlchemyNot legal
HistoricLegal
TimelessLegal
BrawlLegal
Standard BrawlNot legal
Competitive BrawlLegal
GladiatorLegal
Other
PremodernNot legal
Old SchoolNot legal
Penny DreadfulLegal
Future StandardNot legal
As this artifact enters, choose artifact, creature, enchantment, instant, or sorcery.
Spells you cast of the chosen type cost 
less to cast.
less to cast.Plays as:
Cost Reducer
Market · per finishspark updated 1h ago · prices as of 2026-08-30
TCGplayerFinish
Market
Δ 30D · Trend
Low
Buylist
Buy / Sell Gap
Buy
Nonfoil
$3.56
-5.1%
Since Feb 2024:H $6.30L $2.34$2.98
$1.85
$1.13+38% · normal spread
VenuesHide venues
Low: tcgplayer
Buylist: cardkingdom
Foil
$21.59
-2.7%
Since Feb 2024:H $52.49L $19.29$18.80
$12.50
$6.30+34% · normal spread
VenuesHide venues
Low: tcgplayer
Buylist: cardkingdom
Rulings
2 · latest Mar 19, 2021
- WotCMar 19, 2021
The cost reduction applies only to generic mana in the cost of spells of the chosen type you cast.
- WotCMar 19, 2021
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.