custom weapon + sprite

[Tio Akima]

Hello,
after creating a custom sword, how can I associate this custom sword with these attack effects?
Has several sprites of sword attack, I wanted to be able to choose one and put in my custom sword.

Second doubt:
In SRC, where do I find the code that calls these sprites?
These sprites happen when you use basic attack, right?
In what part of src do I find this?

thank you