Void Mirror

Cards similar to Void Mirror:

Vexing Bauble

Artifact

Whenever a player casts a spell, if no mana was spent to cast it, counter that spell.
, , Sacrifice Vexing Bauble: Draw a card.

8.7 /10

$1.66

Chalice of the Void

Artifact

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

7.8 /10

~$31

Cephalid Shrine

Enchantment

Whenever a player casts a spell, counter that spell unless that player pays , where X is the number of cards in all graveyards with the same name as the spell.

1.2 /10

$0.26

Checks and Balances

Enchantment

Cast this spell only if there are three or more players in the game.
Whenever a player casts a spell, each of that player's opponents may discard a card. If they do, counter that spell.

10 /10

$0.35

Common Courtesy

Enchantment

Whenever a player casts a spell without asking your permission while casting it, counter that spell.
When a player asks you permission to cast a spell and you refuse, counter that spell and sacrifice Common Courtesy.

10 /10

$0.38

Planar Chaos

Enchantment

At the beginning of your upkeep, flip a coin. If you lose the flip, sacrifice Planar Chaos.
Whenever a player casts a spell, that player flips a coin. If they lose the flip, counter that spell.

8 /10

$1.45

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