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Void Winnower

Card Name

Void Winnower

Mana Cost

9

Type

Creature – Eldrazi

Rarity

Mythic Rare

rules Text

Your opponents can't cast spells with even mana values. (Zero is even.)Your opponents can't block with creatures with even mana values.

Flavor Text

"Have you ever seen a world fall to its knees? Watch, and learn."—Ob Nixilis

Legal Formats

Commander, Legacy, Modern, Pioneer, Vintage

Not Legal Formats

Alchemy, Brawl, Explorer, Historic, Pauper, Standard

Rulings

(8/25/2015)
Effects that increase or reduce the cost to cast a spell don't affect that spell's mana value.
(8/25/2015)
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.
(8/25/2015)
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
) could block, but Endless One could not.
(8/25/2015)
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.
(8/25/2015)
Yes, your opponent can't even. We know.