Help[NR-CORE] The Effect?

Guys know how to add new effects I wanted to edit NinjaSpeedy for NinjaBerserk so once in a while Speedy was going to give Berserk but I didn't find the file :z
how i edit the ninjaspeedy to give berserk not speedy?
[NR-CORE]

It's quite simple actually. If I remember correctly, everything ability related should be located in Player.UseItem.

Just change out the speedy condition for what you desire.

And if I may ask, what do you mean by, "once in a while Speedy was going to give berserk."
Do you mean:
1) Every game tick, there is a probability of giving another effect.
2) Every ability use, there is a probability of giving another effect.