Whir of Invention [Aether Revolt Promos] Rat Rogue Your new brother is joining

Your new brother is joining the game

Set: Ixalan Type: Legendary Creature — Dinosaur Avatar Mythic Cost: {5}{R}{G}{W} Vigilance

Set: Commander 2016 Type: Instant Rare Cost: {1}{G} Untap all creatures

Set: Saviors of Kamigawa Type: Sorcery — Arcane Rarity: Rare Cost: {5}{B} Target opponent chooses a number

Whir of Invention [Aether Revolt Promos] Rat Rogue Your new brother is joiningSet: 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.