Mystic Decree is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.
Official card text
All creatures lose flying and islandwalk.
Complete guide
Mystic Decree is a classic World Enchantment that fundamentally changes the physics of the battlefield. By stripping creatures of their evasion, it forces combat to happen on the ground where every creature is vulnerable. Understanding how it interacts with the 'world rule' is essential for mastering its presence in a match.
Grounding the Battlefield
While Mystic Decree is on the battlefield, all creatures lose the flying and islandwalk abilities. This is a continuous effect that applies to all creatures currently in play and any that enter the battlefield later. It doesn't matter if a creature naturally has these abilities or gains them through other spells or effects; Mystic Decree ensures they remain grounded and blockable by standard means.
The World Rule Explained
As a World Enchantment, Mystic Decree is subject to a specific state-based action. Only one World permanent can be on the battlefield at a time. If another World permanent enters the battlefield, Mystic Decree is immediately put into its owner's graveyard. If multiple World permanents enter at the exact same time, all of them are put into their owners' graveyards.
Common Strategic Pitfalls
Players often forget that Mystic Decree affects their own creatures just as much as their opponents'. Furthermore, because it is a continuous effect, it can overwrite other abilities depending on the layer system, but generally, it will simply remove these keywords. Remember that it only removes flying and islandwalk; other forms of evasion like landwalk for different basic lands or menace are unaffected.
When to Deploy
This card is most effective in defensive decks that want to stall the game. By removing flying, you ensure your ground blockers can handle any incoming threats. It is best used when your opponent relies on specific evasion to bypass your defenses or when you have alternative ways to tax their resources or attacks.
Interaction examples
PropagandaWith both cards in play, your opponent's creatures lose flying and islandwalk due to Mystic Decree. Because they can no longer fly over your blockers, they must attack on the ground. However, Propaganda forces the opponent to pay {2} for each creature they wish to attack with, making it both difficult and expensive for them to deal damage.
Rhystic StudyIn this scenario, Mystic Decree ensures that the game pace slows down by removing evasion. As your opponent struggles to find ways to deal damage or remove the enchantment, they will likely have to cast more spells to adjust their strategy. Each time they do, Rhystic Study triggers, either providing you with card advantage or further depleting their mana resources.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Mystic Decree
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
This has the supertype world. When a world permanent enters, any world permanents that were already on the battlefield are put into their owners' graveyards. This is a state-based action called the "world rule." The new world permanent stays on the battlefield. If two world permanents enter at the same time, they're both put into their owners' graveyards.
No other card is named in this ruling.
Popular combos
Real combos played by the community, sorted by popularity.
Island Sanctuary + Mystic Decree
- 1At the beginning of your draw step, Island Sanctuary causes you to skip your card draw, and prevent creatures without flying and/or islandwalk from attacking you.
- 2Because Mystic Decree causes all creatures to lose flying, only creatures with islandwalk can attack you.
Mystic Decree + Stormtide Leviathan
- 1Mystic Decree causes all creatures to lose flying and islandwalk.
- 2Because Stormtide Leviathan prohibits creatures without flying or islandwalk from attacking, no creatures can attack.
Moat + Mystic Decree
- 1All creatures lose flying and Islandwalk.
- 2Moat prevents things without flying from attacking.
- 3Creatures can not fulfill the conditions nessasary to attack.
Magus of the Moat + Mystic Decree
- 1All creatures lose flying and Islandwalk.
- 2Magus of the Moat prevents things without flying from attacking.
- 3Creatures can not fulfill the conditions nessasary to attack.
Mystic Decree + Form of the Dragon
- 1Mystic Decree causes all creatures to lose flying.
- 2Form of the Dragon prevents non-flying creatures from attacking you, and since none of your opponent' creatures can have flying, no creatures can attack you.
Teferi's Moat + Painter's Servant + Mystic Decree
- 1Teferi's Moat prevents creatures of the chosen color without flying from attacking you.
- 2Because Painter's Servant makes all creatures the chosen color, and Mystic Decree causes all creatures to lose flying, no creatures can attack you.
Luminous Broodmoth + Felidar Guardian + Mystic Decree + Phyrexian Altar
- 1Sacrifice Felidar Guardian to Phyrexian Altar to add 1 mana of any color.
- 2Luminous Broodmoth triggers, returning Felidar Guardian to the battlefield with a flying counter on it.
- 3Felidar Guardian's ETB triggers, exiling Mystic Decree and then returning it to the battlefield.
- 4Repeat.
Luminous Broodmoth + Felidar Guardian + Mystic Decree + Ashnod's Altar
- 1Sacrifice Felidar Guardian to Ashnod's Altar to add
. - 2Luminous Broodmoth triggers, returning Felidar Guardian to the battlefield with a flying counter on it.
- 3Felidar Guardian's ETB triggers, exiling Mystic Decree and then returning it to the battlefield.
- 4Repeat.
Legal formats
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Meta decks with Mystic Decree
No archived Top 8 deck with this card yet.