When with Furina, Hu Tao can use Marechaussee Hunter set, and then it's just a matter of stacking crit dmg as high as possible. She still wants double Hydro though, Furina's Hydro app alone can't match Hu Tao's fast Pyro. When everything lines up, A Furina-supported Hu Tao wielding a mere Dragon's Bane can feel like she's using a Homa on how much damage she can do.