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Assert Authority

Assert Authority

Instant

uncommon

Affinity for artifacts (This spell costs less to cast for each artifact you control.) Counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

$0.28 ✦ $3.57View on Scryfall →

Semantic Tags

Affinitymechanical

A keyword ability that reduces how much mana you need to spend to cast a spell. See rule 702.41, “Affinity.”

Affinityvector

A keyword ability that reduces how much mana you need to spend to cast a spell. See rule 702.41, “Affinity.”

Rewards controlling, casting, or sacrificing artifacts.

Cost Reductionmechanical

A permanent or effect that makes spells or abilities cheaper to cast or activate.

Counterspellmechanical

Prevents a spell or ability from resolving.

Prevents a spell or ability from resolving.

Graveyard Hatemechanical

Exiles cards from graveyards or prevents graveyard interaction. Shuts down recursion, flashback, and graveyard-matters strategies.

Removalmechanical

Answers an opponent's threat by destroying, exiling, bouncing, or otherwise removing a permanent or spell.

Format Legality

commanderlegal
oathbreakerlegal
modernlegal
pioneernot legal
standardnot legal
legacylegal
vintagelegal
paupernot legal
historicnot legal
explorernot legal
alchemynot legal

Price history

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Printings (1)

SetRarityTCGplayerCard KingdomCardmarket
Mirrodin#30uncommon···

Related Concepts

Affinity

A keyword ability that reduces how much mana you need to spend to cast a spell. See rule 702.41, “Affinity.”

Related Rules

702.41b

If a spell has multiple instances of affinity, each of them applies.

702.41

Affinity

702.41a

Affinity is a static ability that functions while the spell with affinity is on the stack. “Affinity for [text]” means “This spell costs {1} less to cast for each [text] you control.”