[Scripting Question] Ability help

[ChaosandCalamity]

So I had an ability in my head for a while named Harbinger, this ability is going to go to Yvelta and its supposed to have a 50% for any move to OHKO any pokemon at any level. This ability ignores everything except for protecting moves and etc. I was wondering could someone help me get started on making this ability cause I don't really touch the scripting in RPG maker too much.

 

[WolfPP]

First tell us which version of Essentials you're using.

 

[ChaosandCalamity]

Pokemon Essentials v19.1.