Which hero are you? (Game)

I'm actually going to guess Timbersaw

I'm actually going to guess Timbersaw

Jabo has it at timbersaw:)

rough and course and smooth and prickly > these are different bark/leaf types on tree's
in all forms they come they make me sickly > in game timbersaw says " ugh ugh why does it have to be tree's' in a voice that sounds like hes going to be sick.
in single or many i wish them divided > divided can also mean to split of to halve and what do you do when u cut tree's ? you split them in half...
no matter how many my course is decided > in his lore it says " sparking the suit to life. it was fear that drove him and he knew he must face that fear" thus he decided on his course (weak i know but eh)
on and on i spin untill i kill them all > this is a direct reference to his ulti which is a spinning blade... :)

If blackwing comes back he can feel free to go. I just enjoy guessing ;P

Soooooo... Anyone else got one?

No

Looks like it's my time to shine, this one is an item one that I thought up real quick and probably won't be that hard.

Put me on your back. I will help you stay safe.
Put me in your hands, I will put them in their place.
Put me on your back, your team will thank you.
And the enemies will be afraid to gank you.
Put me in your hands, you will be godlike.
Dominate the one on ones, and the teamfights.

Mekansm?

Nope! Not Mekansm.

Must be Shadow Blade then.