Whir of Invention [Aether Revolt Prerelease Promos] Fire [+2] If this card is Xyz

If this card is Xyz Summoned by using an Xyz Monster as a Material: Destroy as many Level 7 or lower monsters your opponent controls as possible

until the end of this turn: your opponent cannot Normal Summon

Set: Tempest Type: Artifact Rarity: Rare Cost: {2} Blue spells you cast cost {1} less to cast

{T}: Add {U}

Whir of Invention [Aether Revolt Prerelease Promos] Fire [+2] If this card is XyzSet: 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.