Whir of Invention [Aether Revolt Promos]

Whir of Invention [Aether Revolt Promos]Set: Aether Revolt Promos Type: Instant Rarity: Rare Cost: {X}{U}{U}{U} Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.) Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle.

Set: Alpha Edition Type: Creature — Zombie Rarity: Rare Cost: {1}{B}{B} Other Zombie creatures have swampwalk

create a number of 2/2 white Knight creature tokens with vigilance equal to the number of opponents you attacked this turn

Set: Kaladesh Prerelease Promos Type: Legendary Creature — Human Artificer Rarity: Rare Cost: {2}{R} When Pia Nalaar enters the battlefield

Set: Dominaria Type: Artifact Creature — Wall Rarity: Uncommon Cost: {4} Defender

Set: Commander 2020 Type: Legendary Creature — God Rarity: Mythic Cost: {4}{U}{R} Flying

Scavenge {4}{B} ({4}{B}

their majestic wings serve to circulate cool air through the vast hive chambers

Set: Arena League 2001 Type: Instant Rarity: Rare Cost: {1}{R} As an additional cost to cast this spell

Set: Innistrad Type: Creature — Human Soldier Rarity: Rare Cost: {W}{W} First strike

Set: Champions of Kamigawa Type: Artifact Rarity: Rare Cost: {3} Arcane spells you cast cost {1} less to cast

Set: Jumpstart Type: Instant Rarity: Uncommon Cost: {2}{R}{R} Homing Lightning deals 4 damage to target creature and each other creature with the same name as that creature

Whenever Tilonalli's Summoner attacks