Cloud Key
Artifact
EOCEdge of Eternities Commander#54rare
The advent of cloudsculpting ended the use of mechanical locks in Illvoi society.
- Finishes
- Nonfoil
- Border
- black
- Security stamp
- oval
- Frame
- 2015
- Illustrator
- Matt Stewart
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 finishtrend updated 6h ago · prices as of Oct 15, 2026
Nonfoil$1.61+7.3%$1.44 low$0.74 gap
Nonfoil$1.61+7.3%30DLowest listing
$1.44Buylist
$0.70Buy / Sell Gap
$0.74+51% · normal spread
Cheapest playable copy$1.61· across 10 printings· you're viewing it
Price history
last 30 days · set by the window above · each finish on its own scaleNonfoil$1.61+7.3%30D
30D range$1.45to$1.61Since Jul 2025:H $3.68L $0.95Loading other printings
Found in
1 productRounded oddsProductPriceNonfoil
Edge of Eternities Commander Deck Counter Intelligence
Deck · $37.75
$37.75Nonfoil Included
Combos
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.