In Search of Greatness [Kaldheim Prerelease Promos] Kavu its controller adds an additional

its controller adds an additional {R}

Set: Tempest Type: Creature — Shapeshifter Rarity: Rare Cost: {3}{U}{U} As long as an opponent controls a creature with flying not named Escaped Shapeshifter

Set: Unstable Tokens Type: Token Artifact Creature — Construct Rarity: Common

These devices help me 'tune' that instrument

In Search of Greatness [Kaldheim Prerelease Promos] Kavu its controller adds an additionalSet: Kaldheim Prerelease Promos Type: Enchantment Rarity: Rare Cost: {G}{G} At the beginning of your upkeep, you may cast a permanent spell from your hand with mana value equal to 1 plus the highest mana value among other permanents you control without paying its mana cost. If you don't, scry 1.