Simoon 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
Simoon deals 1 damage to each creature target opponent controls.
Complete guide
Simoon is a classic Gruul instant that offers a swift way to clear out small threats from your opponent's side of the board. For just two mana, it punishes decks that rely on numerous small creatures while leaving your own forces untouched.
What It Does
Simoon is a targeted area-of-effect spell. It deals exactly 1 damage to every creature controlled by a specific opponent chosen as the spell is cast. Because it only targets the player and not the creatures themselves, it can bypass abilities like Shroud or Ward on individual creatures.
How It Resolves Step by Step
First, you cast Simoon and choose an opponent as the target. Upon resolution, the game checks if the target player is still legal. If they are, Simoon identifies every creature that player currently controls on the battlefield. Finally, it deals 1 damage to each of those creatures simultaneously. Any creatures with 1 toughness and no saving effects will then be destroyed as a state-based action.
Common Mistakes
A frequent error is assuming Simoon hits all opponents in a multiplayer game; however, it specifically states 'target opponent,' so you must choose only one. Additionally, players sometimes forget that if the targeted opponent gains Hexproof before the spell resolves, the entire spell will fail to resolve and no damage will be dealt to any creatures.
When to Play It
Simoon is most effective as a combat trick or a response to token generation. It is particularly devastating against strategies that utilize 1/1 tokens or mana-producing creatures with low toughness, allowing you to stall your opponent's momentum at instant speed.
Interaction examples
If your opponent uses Beast Within to destroy your permanent and gives you a 3/3 Beast, Simoon won't be enough to kill it alone. However, if your opponent already has several 1-toughness creatures and you use Simoon, you clear their board while your new 3/3 Beast survives the 1 damage.
If you cast Simoon targeting your opponent, they can respond with Heroic Intervention. Once Heroic Intervention resolves, their creatures gain Indestructible. When Simoon subsequently resolves, it still deals 1 damage to each creature, but since they are Indestructible, those creatures will not be destroyed by that damage.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Simoon
Original English text — Wizards of the Coast / Scryfall
No additional ruling has been published for this card.
Legal formats
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Meta decks with Simoon
No archived Top 8 deck with this card yet.



Beast Within
Heroic Intervention