Birgi, God of Storytelling // Harnfel, Horn of Bounty [Kaldheim Prerelease Promos] Blue An opponent chooses one of

An opponent chooses one of them

or Serpent you control deals combat damage to a player

gnome wizard

you may put a Goblin permanent card from your hand onto the battlefield

After using the signet to finish the miniaturization spell

Birgi, God of Storytelling // Harnfel, Horn of Bounty [Kaldheim Prerelease Promos] Blue An opponent chooses one ofSet: Kaldheim Prerelease Promos Type: Legendary Creature God Rarity: Rare Cost: {2}{R} Whenever you cast a spell, add {R}. Until end of turn, you don't lose this mana as steps and phases end. Creatures you control can boast twice during each of your turns rather than once. "This is a tale to make all of Kaldheim tremble"