Thoma’s shield scales off of his HP, so any weapon that can increase his HP is a perfect fit for him. Thoma’s best Polearm is the elusive Staff of Homa, which boosts CRIT DMG and increases its user’s HP by 20%. Below we'll cover everything you need to know about Thoma, including wishing, weapons, artifacts, ascension materials, talents, abilities, and constellations. This guide will show you how to create the best Thoma build in Genshin Impact. It makes sense, then, that he’s a support and sub-DPS character similar to Zhongli. Want to learn how to create the best Thoma build in Genshin Impact? As the chief retainer of Inazuma’s Kamisato Clan, Mondstadt native Thoma is always down to lend a helping hand, even aiding the player in their arrival to Inazuma.