Card Codex

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17 May 2024: Card library updated.

Assert Authority

5UU · Instant

Affinity for artifacts (This spell costs {1} 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.

Similar cards

Color identity:
NameManaTypeText
Worldspine Wurm 8GGGCreature — Wurm Trample When Worldspine Wurm dies, create three 5/5 green Wurm creature tokens with trample. When Worldspine Wurm is put into a graveyard from anywhere, shuffle it into its owner's library. 15/15
Delayed Blast Fireball 1RRInstant Delayed Blast Fireball deals 2 damage to each opponent and each creature they control. If this spell was cast from exile, it deals 5 damage to each opponent and each creature they control instead. Foretell {4}{R}{R} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)
Ashen Reaper Creature — Zombie Elemental Menace At the beginning of your end step, put a +1/+1 counter on Ashen Reaper if a permanent was put into a graveyard from the battlefield this turn. 2/1
Painbringer 2BBCreature — Human Minion {T}, Exile any number of cards from your graveyard: Target creature gets -X/-X until end of turn, where X is the number of cards exiled this way. 1/1
Rousing Refrain 3RRSorcery Add {R} for each card in target opponent's hand. Until end of turn, you don't lose this mana as steps and phases end. Exile Rousing Refrain with three time counters on it. Suspend 3—{1}{R} (Rather than cast this card from your hand, you may pay {1}{R} and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)
Tenth District Legionnaire RWCreature — Human Soldier Haste Whenever you cast a spell that targets Tenth District Legionnaire, put a +1/+1 counter on Tenth District Legionnaire, then scry 1. 2/2
Stern Proctor UUCreature — Human Wizard When Stern Proctor enters the battlefield, return target artifact or enchantment to its owner's hand. 1/2
Cemetery Protector 2WWCreature — Human Soldier Flash When Cemetery Protector enters the battlefield, exile a card from a graveyard. Whenever you play a land or cast a spell, if it shares a card type with the exiled card, create a 1/1 white Human creature token. 3/4
Step Between Worlds 3UUSorcery Each player may shuffle their hand and graveyard into their library. Each player who does draws seven cards. Exile Step Between Worlds. Plot {4}{U}{U} (You may pay {4}{U}{U} and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)
Runic Repetition 2USorcery Return target exiled card with flashback you own to your hand.
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