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Void Winnower
Creature — Eldrazi
mythic
Your opponents can't cast spells with even mana values. (Zero is even.) Your opponents can't block with creatures with even mana values.
11/9
Semantic Tags
Punishes or prevents creature-based strategies — makes creatures enter tapped, prevents attacking, taxes creatures.
Creatures that tap to produce mana. Llanowar Elves, Birds of Paradise, Elvish Mystic.
Effects that double or multiply mana production.
A card or token on the battlefield. See rule 110, “Permanents.”
Tax or prevent spellcasting — Rule of Law, Thalia, Sphere of Resistance.
Slows opponents down by taxing actions or restricting what they can do.
Slows opponents down by taxing actions or restricting what they can do.
Cannot be blocked or has an ability that makes it very hard to block.
Format Legality
Price history
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Printings (6)
| Set | Rarity | TCGplayer | Card Kingdom | Cardmarket |
|---|---|---|---|---|
| Pioneer Masters#3 | mythic | · | · | · |
| Store Championships#32 | rare | · | · | · |
| Secret Lair Drop#1075 | mythic | · | · | · |
| Battle for Zendikar Promos#17p | mythic | · | · | · |
| Battle for Zendikar#17 | mythic | · | · | · |
| Battle for Zendikar Promos#17s | mythic | · | · | · |
Related Rules
If an ability would produce one or more mana of an undefined type, it produces no mana instead.
Some abilities produce mana based on the type of mana another permanent or permanents “could produce.” The type of mana a permanent could produce at any time includes any type of mana that an ability of that permanent would produce if the ability were to resolve at that time, taking into account any applicable replacement effects in any possible order. Ignore whether any costs of the ability could or could not be paid. If that permanent wouldn’t produce any mana under these conditions, or no type of mana can be defined this way, there’s no type of mana it could produce.
To “tap [a permanent] for mana” is to activate a mana ability of that permanent that includes the {T} symbol in its activation cost. See rule 605, “Mana Abilities.”
An ability that triggers whenever a permanent “is tapped for mana” or is tapped for mana of a specified type triggers whenever such a mana ability resolves and produces mana or the specified type of mana.
A replacement effect that applies if a permanent “is tapped for mana” or tapped for mana of a specific type and/or amount modifies the mana production event while such an ability is resolving and producing mana or the specified type and/or amount of mana.
If an object’s enters-the-battlefield triggered ability or replacement effect refers to X, and the spell that became that object as it resolved had a value of X chosen for any of its costs, the value of X for that ability is the same as the value of X for that spell, although the value of X for that permanent is 0. This is an exception to rule 107.3i.
The tap symbol is {T}. The tap symbol in an activation cost means “Tap this permanent.” A permanent that’s already tapped can’t be tapped again to pay the cost. A creature’s activated ability with the tap symbol in its activation cost can’t be activated unless the creature has been under its controller’s control continuously since their most recent turn began. See rule 302.6.
The untap symbol is {Q}. The untap symbol in an activation cost means “Untap this permanent.” A permanent that’s already untapped can’t be untapped again to pay the cost. A creature’s activated ability with the untap symbol in its activation cost can’t be activated unless the creature has been under its controller’s control continuously since their most recent turn began. See rule 302.6.
Rulings
Effects that increase or reduce the cost to cast a spell don't affect that spell's mana value.
The mana value of a face-down creature spell or a face-down creature is 0. Void Winnower will stop face-down creature spells from being cast and face-down creatures from blocking.
Yes, your opponent can't even. We know.
For creatures on the battlefield with {X} in their mana costs, the value for X is 0. Mistcutter Hydra (a creature with mana cost {X}{G}) could block, but Endless One could not.
For spells with {X} in their mana costs, use the value chosen for X to determine if the spell's mana value is even or not. For example, your opponent could cast Endless One (with mana cost {X}) with X equal to 5, but not with X equal to 6.