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
Inventive Iteration 3UEnchantment — Saga (As this Saga enters and after your draw step, add a lore counter.) I — Return up to one target creature or planeswalker to its owner's hand. II — Return an artifact card from your graveyard to your hand. If you can't, draw a card. III — Exile this Saga, then return it to the battlefield transformed under your control.
Saproling Migration 1GSorcery Kicker {4} (You may pay an additional {4} as you cast this spell.) Create two 1/1 green Saproling creature tokens. If this spell was kicked, create four of those tokens instead.
Shadowfeed BInstant Exile target card from a graveyard. You gain 3 life.
Kurgadon 4GCreature — Beast Whenever you cast a creature spell with mana value 6 or greater, put three +1/+1 counters on Kurgadon. 3/3
Suffer the Past XBInstant Exile X target cards from target player's graveyard. For each card exiled this way, that player loses 1 life and you gain 1 life.
Caldera Breaker 3RRRArtifact Creature — Golem Trample When Caldera Breaker enters the battlefield, exile all Mountain cards from your library. When you do, Caldera Breaker deals that much damage to target creature or planeswalker an opponent controls. When Caldera Breaker dies, put all cards exiled with it onto the battlefield under their owner's control. Conjure four cards named Volcanic Geyser into your library, then shuffle. 6/6
Kaya's Ghostform BEnchantment — Aura Enchant creature or planeswalker you control When enchanted permanent dies or is put into exile, return that card to the battlefield under your control.
Outmuscle 3GSorcery Put a +1/+1 counter on target creature you control, then it fights target creature you don't control. (Each deals damage equal to its power to the other.) Adamant — If at least three green mana was spent to cast this spell, the creature you control gains indestructible until end of turn.
Soul Echo XWWEnchantment Soul Echo enters the battlefield with X echo counters on it. You don't lose the game for having 0 or less life. At the beginning of your upkeep, sacrifice Soul Echo if there are no echo counters on it. Otherwise, target opponent may choose that for each 1 damage that would be dealt to you until your next upkeep, you remove an echo counter from Soul Echo instead.
Sluggishness 1REnchantment — Aura Enchant creature Enchanted creature can't block. When Sluggishness is put into a graveyard from the battlefield, return Sluggishness to its owner's hand.
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