Kozilek's Unsealing 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
Devoid (This card has no color.) Whenever you cast a creature spell with mana value 4, 5, or 6, create two 0/1 colorless Eldrazi Spawn creature tokens with "Sacrifice this token: Add." Whenever you cast a creature spell with mana value 7 or greater, draw three cards.
Complete guide
Kozilek's Unsealing is a powerful colorless enchantment that rewards you for playing high-cost creature spells. Whether you are ramping into bigger threats or looking to refill your hand, this card provides incredible value for Eldrazi-themed decks. Its Devoid ability ensures it remains colorless in all zones, even though it costs blue mana to cast.
Colorless Utility and Devoid
Kozilek's Unsealing features the Devoid keyword, meaning it has no color regardless of the blue mana in its cost. This applies in your hand, library, graveyard, and on the battlefield. Even if an effect causes the card to lose the Devoid ability, the enchantment remains colorless because color-changing effects are processed before abilities are lost. Note that for Commander, its color identity is still blue.
Triggering the Rewards
The enchantment has two distinct triggered abilities based on the mana value of creature spells you cast. If the mana value is 4, 5, or 6, you create two Eldrazi Spawn tokens. If the mana value is 7 or greater, you draw three cards. These abilities trigger as soon as you cast the spell, meaning they resolve before the creature itself enters the battlefield. Even if your opponent counters your creature spell, you still get your tokens or cards.
Strategic Timing
Since the Eldrazi Spawn tokens provide mana when sacrificed, you can use the first trigger to help pay for future, even larger spells. Because the draw trigger is so potent, you should prioritize casting your 7+ mana creatures while this enchantment is on the board to ensure you never run out of gas. Remember that mana value includes X in the cost if the spell has {X}, so a large X spell can easily trigger the draw ability.
Interaction examples
Eldrazi Spawn
PropagandaWith Kozilek's Unsealing on the battlefield, you cast a creature spell with mana value 5. The enchantment triggers immediately, creating two 0/1 colorless Eldrazi Spawn tokens. If your opponent later tries to attack you while Propaganda is active, you can sacrifice these two Eldrazi Spawn tokens to add two colorless mana, allowing you to pay the tax required by Propaganda to protect yourself.
Rhystic StudyYou have Kozilek's Unsealing and Rhystic Study on the battlefield. You cast a massive Eldrazi spell with a mana value of 8. The draw ability of Kozilek's Unsealing triggers and resolves first, letting you draw three cards before the Eldrazi spell even resolves. If your opponent then casts a spell to try and remove your enchantment, your Rhystic Study will trigger, potentially drawing you even more cards or forcing them to spend extra mana.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Kozilek's Unsealing
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
Kozilek's Unsealing's triggered abilities trigger before the spell that causes it to trigger. The ability will resolve even if that spell is countered or otherwise leaves the stack.
No other card is named in this ruling.
- #2· Wizards of the Coast
If you cast a creature spell with
in its mana cost, use the value of X that was chosen when it was cast to determine its mana value.No other card is named in this ruling.
- #3· Wizards of the Coast
A card with devoid is just colorless. It's not colorless and the colors of mana in its mana cost.
No other card is named in this ruling.
- #4· Wizards of the Coast
Other cards and abilities can give a card with devoid a color. If that happens, it's just the new color, not that color and colorless.
No other card is named in this ruling.
- #5· Wizards of the Coast
Devoid works in all zones, not just on the battlefield.
No other card is named in this ruling.
- #6· Wizards of the Coast
If 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.
No other card is named in this ruling.
- #7· Wizards of the Coast
Devoid doesn't affect the color identity of the card for the purposes of the Commander variant. For example, while Abstruse Appropriation is colorless because it has devoid, its color identity is still white and black, and it can't be included in a Commander deck where the commander's color identity doesn't include both white and black.
No other card is named in this ruling.
Popular combos
Real combos played by the community, sorted by popularity.
Ulalek, Fused Atrocity + Echoes of Eternity + Kozilek's Unsealing
- 1Cast an Eldrazi with mana value 4, 5 or 6 from your hand by paying its mana cost.
- 2Ulalek and Kozilek's Unsealing's first ability trigger twice, the Eldrazi cast triggers twice if it has a cast ability, Echoes of Eternity triggers once if the Eldrazi cast was colorless.
- 3Resolve the first Ulalek's trigger, causing you to pay to copy the Eldrazi spell, the additional Ulalek's trigger, both Kozilek's Unsealing triggers, both Eldrazi cast triggers if it had one, and the Echoes of Eternity trigger if it triggered.
- 4Resolve both Eldrazi cast triggers, if applicable.
- 5Resolve both Kozilek's Unsealing triggers, creating four 0/1 Eldrazi Spawn creature tokens.
- 6Holding priority, activate two Eldrazi Spawns by sacrificing them, adding .
- 7Resolve the copy of Ulalek's trigger from step 3, causing you to pay to copy the Eldrazi spell, the additional Ulalek's trigger, both Kozilek's Unsealing triggers and any other abilities on the stack.
- 8Repeat from step 4.
Ulalek, Fused Atrocity + Strionic Resonator + Kozilek's Unsealing
- 1Cast an Eldrazi from your hand by paying its mana cost.
- 2Ulalek triggers, the Eldrazi cast triggers if it has a cast ability, and Kozilek's Unsealing's first ability triggers.
- 3Holding priority, activate Strionic Resonator by paying
and tapping it, copying Ulalek's trigger. - 4Resolve the copy of Ulalek's trigger, causing you to pay to copy the Eldrazi spell, Ulalek's trigger, the Eldrazi cast trigger if it had one, and the Kozilek's Unsealing trigger.
- 5Resolve the Eldrazi cast trigger, if applicable.
- 6Resolve the copy of the Kozilek's Unsealing trigger, creating two 0/1 Eldrazi Spawn creature tokens.
- 7Activate both Eldrazi Spawn creature tokens by sacrificing it, adding .
- 8Resolve the copy of Ulalek's trigger from step 4, causing you to pay to copy the Eldrazi spell, Ulalek's trigger, the Eldrazi cast trigger if it had one, and the Kozilek's Unsealing trigger.
Ulalek, Fused Atrocity + Lithoform Engine + Kozilek's Unsealing
- 1Cast an Eldrazi from your hand by paying its mana cost.
- 2Ulalek triggers, the Eldrazi cast triggers if it has a cast ability, and Kozilek's Unsealing's first ability triggers.
- 3Holding priority, activate Lithoform Engine's first ability by paying and tapping it, copying Ulalek's trigger.
- 4Resolve the copy of Ulalek's trigger, causing you to pay to copy the Eldrazi spell, Ulalek's trigger, the Eldrazi cast trigger if it had one, and the Kozilek's Unsealing trigger.
- 5Resolve the Eldrazi cast trigger, if applicable.
- 6Resolve the copy of the Kozilek's Unsealing trigger, creating two 0/1 Eldrazi Spawn creature tokens.
- 7Activate both Eldrazi Spawn creature tokens by sacrificing it, adding .
- 8Resolve the copy of Ulalek's trigger from step 4, causing you to pay to copy the Eldrazi spell, Ulalek's trigger, the Eldrazi cast trigger if it had one, and the Kozilek's Unsealing trigger.
Ulalek, Fused Atrocity + Annie Joins Up + Kozilek's Unsealing
- 1Cast an Eldrazi with mana value 4, 5 or 6 from your hand by paying its mana cost.
- 2Ulalek triggers twice, and Kozilek's Unsealing's first ability triggers once. The Eldrazi cast also triggers if it has a cast ability.
- 3Resolve the first Ulalek's trigger, causing you to pay to copy the Eldrazi spell, Ulalek's trigger, Kozilek's Unsealing's trigger, and the Eldrazi cast trigger if it had one.
- 4Resolve the Eldrazi cast trigger, if applicable.
- 5Resolve the Kozilek's Unsealing trigger, creating two 0/1 Eldrazi Spawn creature tokens.
- 6Holding priority, activate the two Eldrazi Spawns by sacrificing them, adding .
- 7Resolve the copy of Ulalek's trigger from step 3, causing you to pay to copy the Eldrazi spell, Ulalek's trigger, Kozilek's Unsealing's trigger, and the Eldrazi cast trigger if it had one.
- 8Repeat from step 4.
Ancestral Statue + Kozilek's Unsealing + Doubling Season
- 1Cast Ancestral Statue by paying
. - 2Kozilek's Unsealing's first ability triggers, creating four 0/1 Eldrazi Spawn creature tokens.
- 3When Ancestral Statue enters the battlefield, it triggers, returning itself from the battlefield to your hand.
- 4Activate the Eldrazi Spawns by sacrificing them, adding .
- 5Repeat.
Ancestral Statue + Kozilek's Unsealing + Ashnod's Altar
- 1Cast Ancestral Statue by paying .
- 2Kozilek's Unsealing's first ability triggers, creating two 0/1 Eldrazi Spawn creature tokens.
- 3When Ancestral Statue enters the battlefield, it triggers, returning itself from the battlefield to your hand.
- 4Activate Ashnod's Altar twice by sacrificing the Eldrazi Spawns, adding .
- 5Repeat.
Ancestral Statue + Kozilek's Unsealing + Primal Vigor
- 1Cast Ancestral Statue by paying .
- 2Kozilek's Unsealing's first ability triggers, creating four 0/1 Eldrazi Spawn creature tokens.
- 3When Ancestral Statue enters the battlefield, it triggers, returning itself from the battlefield to your hand.
- 4Activate the Eldrazi Spawns by sacrificing them, adding .
- 5Repeat.
Ancestral Statue + Kozilek's Unsealing + Adrix and Nev, Twincasters
- 1Cast Ancestral Statue by paying .
- 2Kozilek's Unsealing's first ability triggers, creating four 0/1 Eldrazi Spawn creature tokens.
- 3When Ancestral Statue enters the battlefield, it triggers, returning itself from the battlefield to your hand.
- 4Activate the Eldrazi Spawns by sacrificing them, adding .
- 5Repeat.
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Meta decks with Kozilek's Unsealing
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