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Chalice of the Void

Card Name

Chalice of the Void

Mana Cost

X
X

Type

Artifact

Rarity

Mythic Rare

rules Text

This artifact enters with X charge counters on it.Whenever a player casts a spell with mana value equal to the number of charge counters on this artifact, counter that spell.

Legal Formats

Commander, Legacy, Modern

Restricted Formats

Vintage

Not Legal Formats

Alchemy, Brawl, Explorer, Historic, Pauper, Pioneer, Standard

Rulings

(3/19/2021)
A mana cost of
X
X
 means that you pay twice X. For example, if you want X to be 3, you pay
6
 to cast Chalice of the Void.
(3/19/2021)
The number of charge counters on Chalice of the Void matters only at the time the spell is cast. Changing the number of charge counters on Chalice of the Void after a spell has been cast won't change whether the ability triggers or counters the spell.
(3/19/2021)
If there are zero charge counters on Chalice of the Void, it counters each spell with a mana value of 0. This includes face-down creature spells cast with morph's alternative cost.
(3/19/2021)
Chalice of the Void has to be on the battlefield at the end of casting a spell for the ability to trigger. If you sacrifice Chalice of the Void as a cost to cast a spell, its ability can't trigger. However, if it leaves the battlefield once its ability has triggered, that ability will still counter the spell.