Whir of Invention [Aether Revolt Promos] Kraken It's so infinite that its

It's so infinite that its flavor text says

Set: Kamigawa: Neon Dynasty Commander Type: Instant Rarity: Rare Cost: {2}{R} The owner of target permanent shuffles it into their library

When the creature put onto the battlefield with The Upside Down leaves the battlefield

Set: March of the Machine Type: Artifact Creature — Frog Rarity: Common Cost: {3} Convoke (Your creatures can help cast this spell

Whir of Invention [Aether Revolt Promos] Kraken It's so infinite that itsSet: 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.