Whir of Invention [Aether Revolt Prerelease Promos] Human Knight The first player may reveal

The first player may reveal cards from the top of their library until they reveal a creature card

Set: Betrayers of Kamigawa Type: Instant — Arcane Rarity: Rare Cost: {X}{U}{U} You may exile a blue card with mana value X from your hand rather than pay this spell's mana cost

{3}{W}: Create a 1/1 white Spirit creature token with flying

Set: Portal Three Kingdoms Type: Legendary Creature — Human Soldier Warrior Rarity: Rare Cost: {5}{R} Haste

Set: From the Vault: Relics Type: Artifact Rarity: Mythic Cost: {5} {T}

Whir of Invention [Aether Revolt Prerelease Promos] Human Knight The first player may revealSet: 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.