u/Duke-_-Jukem

So hydras breath says it doesn't proc any attack modifiers but it does appear to work with dks ulti with the extra projectiles applying all the effects from dragon form allowing you to apply the dps and slow to multiple heroes and dealing a ton of splash damage if they stand neear each other. Also combined with your lv 20 talent your attack range is pretty crazy.

I have 100s of hours in this game and only just found this out because one was blocking a mining spot lol