Soul Exchange + Enemy Controller

Soul Exchange target Monster A --> active Enemy Controller Effect 2--> release Monster A as COST --> target Monster B --> take control Monster B

Soul Exchange target Shien:
Situation 1: Shien negate --> release a monster and take control it with Enemy Controller
Situation 2: Shien do not negate --> release Shien and take control another monster (if there is 2 monster on opperent's field)

Synchron with the monster u took control or release summon with it