Custom Hero Ability question

(I know there is probably many threads that have already asked and answered this question, but my search forum is not working so I can't find any)

I normally make all hero abilities based off of standard hero abilities in the game, but I have heard you can make completely custom abilities. I need to know how to make these completely custom abilities so I can make one hero ability that is like 3 standard hero abilities combined.

If anyone could put this process into novice steps for me I would greatly appreciate it.

you need to use triggers and dummy casters if you want make completly new abilities

isnt there a way to make an ability such as:

-an aura that has damage add, armor add, attack speed add, movement speed add, life regeneration add, and thorns? (basically a few standard auras combined)

...without the use of triggers?

without the use of triggers no.

But why not use triggers, it doesn't slow your map down too much afterall.