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Cloud Key

10 printings listed in our catalog, from newest to oldest.

The Zeta Set SLZ · No. 220 2026-09-02

Card text

Artifact

As this artifact enters, choose artifact, creature, enchantment, instant, or sorcery. Spells you cast of the chosen type cost

less to cast.

EDHREC rank #604 Uncommon Not on the Reserved List

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The 10 printings

All, with their prices ↓

Standard ∅ Not legal

Pioneer ∅ Not legal

Modern ✓ Legal

Legacy ✓ Legal

Vintage ✓ Legal

Pauper ∅ Not legal

Commander ✓ Legal

Oathbreaker ✓ Legal

Brawl ✓ Legal

Historic ✓ Legal

Timeless ✓ Legal

Alchemy ∅ Not legal

Explorer ∅ Not legal

Gladiator ✓ Legal

Penny ✓ Legal

Duel ✓ Legal

Official rulings

2 rulings · in English, source Scryfall

The cost reduction applies only to generic mana in the cost of spells of the chosen type you cast.

2021-03-19 · Wizards of the Coast

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.

2021-03-19 · Wizards of the Coast