Whir of Invention [Aether Revolt Prerelease Promos] Saviors of Kamigawa The faultless and immaculate castes

The faultless and immaculate castes form the lower tiers of elvish society

Each artifact you tap after you're done activating mana abilities pays for {1}

Set: Theros Type: Instant Rarity: Common Cost: {U} Counter target artifact or enchantment spell

To the sorrow of all

put a charge counter on Primal Amulet

Whir of Invention [Aether Revolt Prerelease Promos] Saviors of Kamigawa The faultless and immaculate castesSet: Aether Revolt Prerelease 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.