Herald of Kozilek
Creature — Eldrazi Drone
Rarity
Uncommon
Mana Cost
Price · Cardmarket trend
€0.49 Foil €4.44
Artist
Johannes Voss
Power / Toughness
2 / 4
Cardmarket trend via Scryfall, as of 10/27/2026. May differ from the actual price.
Oracle Text
Devoid (This card has no color.) Colorless spells you cast cost less to cast.
Rules for this card
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A characteristic-defining ability that makes an object colorless. See rule 702.114, “Devoid.”
Rulings (10)
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Wizards of the CoastHerald of Kozilek's last ability can't reduce the amount of colored mana you pay for a spell. It reduces only the generic component of that mana cost.
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Wizards of the CoastIf there are additional costs to cast a spell, or if the cost to cast a spell is increased by an effect, apply those increases before applying cost reductions.
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Wizards of the CoastCards with devoid use frames that are variations of the transparent frame traditionally used for Eldrazi. The top part of the card features some color over a background based on the texture of the hedrons that once imprisoned the Eldrazi. This coloration is intended to aid deckbuilding and game play.
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Wizards of the CoastOther cards and abilities can give a card with devoid color. If that happens, it's just the new color, not that color and colorless.
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Wizards of the CoastIf a card loses devoid, it will still be colorless. This is because effects that change an object's color (like the one created by devoid) are considered before the object loses devoid.
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Wizards of the CoastThe cost reduction can apply to alternative costs.
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Wizards of the CoastIf a colorless spell you cast has
in its mana cost, you choose the value of X before calculating the spell's total cost. For example, if that spell's mana cost is , you could choose 5 as the value of X and pay 
to cast the spell.
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Wizards of the CoastA card with devoid is just colorless. It's not colorless and the colors of mana in its mana cost.
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Wizards of the CoastDevoid works in all zones, not just on the battlefield.
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Wizards of the CoastHerald of Kozilek's last ability doesn't change the mana cost or mana value of any spell. It changes only the total cost you actually pay.