Mox Toolbox
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Sphere of Annihilation
Artifact
This artifact enters with X void counters on it. At the beginning of your upkeep, exile this artifact, all creatures and planeswalkers with mana value less than or equal to the number of void counters on it, and all creature and planeswalker cards in graveyards with mana value less than or equal to the number of void counters on it.
Mana cost
X
B
Mana value
1
Printings
From
$0.21
EDHREC rank
#20493
Buy
Formats
Pioneer
Legal
Modern
Legal
Legacy
Legal
Vintage
Legal
Commander
Legal
Rulings
23 Jul 2021
If a permanent on the battlefield or a card in a graveyard has {X} in its mana cost, X is 0 when determining that card's mana value.

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