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Mystic Decree

World Enchantment

All creatures lose flying and islandwalk.

CMC
4
Mana cost
{2}{U}{U}
Color identity
U
Rarity
uncommon
Set
Masters Edition IV
Price
—
EDHREC rank
#24272
Buy on TCGplayer
Mystic Decree card art
Mystic Decree turns off all flying permanently — every creature loses flying, islandwalk becomes unblockable in the process, and the battlefield fundamentally reshapes around it. It costs four mana at enchantment speed, so it's slower than a wrath, but unlike Island Sanctuary it doesn't protect you from one angle — it grounstops the entire table.

Format Analysis

Where it lives, where it can’t

FormatVerdict
commander legal
legacy legal
modern not legal
pioneer not legal
standard not legal
vintage legal
pauper not legal
oathbreaker legal

Mystic Decree is legal in Commander, Legacy, Vintage, and Oathbreaker, and it's essentially a Commander card — the eternal formats have more efficient disruption and no multiplayer environment to exploit a permanent flying ban. In Commander, it slots into blue control and pillow-fort strategies that want to neutralize aerial threats from multiple opponents at once without spending repeated removal. The islandwalk clause is a real bonus in any deck running Island-heavy mana bases or Merfolk synergies, converting an already disruptive enchantment into a one-sided evasion engine.

Key Combos

Combo lines featuring this card

Price Context

Current price

unknown tier

Pricing data for Mystic Decree isn't currently available, so check Scryfall or TCGPlayer for the current market. It's an older enchantment with a narrow enough audience that it tends to sit in bulk-rare territory, but supply is limited enough that copies can be inconsistent to find.

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Sources

Mentioned

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Updated . Data from Scryfall, EDHREC, and Commander Spellbook.