>>536369514
>i got gunblade to the summoning people stage of the fight
Lei Heng?
Read the passives
Spoonfeeding Solution:
Play the fight in a way that Lei Heng gets 3 Bind on turn 5, 8, 11, 14 etc. Meursault Chains of Others is one easy way, just remember to use it on turn 4, 7, 10, 13 etc