Hey, congratz ;)

Well, you can try to play him with Chiriku and Mei

Something like:

Mei - chiriku

x - x

water - tobirama

10combo chase on main, should be enought to proc Tobirama chase with Chiriku's mystery.

Kyushoku summon for full chase with Mei. Or 10 combo and leave the Mei's chase free incase she combo with auto.