Need ESXi Scripting help

HI Guys,

I am preparing for VCAP-DCD, I just need your help here.
I would like to have some scripts which can Break some thing in the environment,.To be more specific i need scripts which can take ESX out of a cluster and create some distrubances in the environment.Not just ESX any scripts which can break the existing environment also can ber of great help.

Please help me out with this.

Thank you