Tatanka(the war chief)

So this is a very rough idea of a champion. I don't get how the numbers work for abilities so I won't be doing that. This is just s rough idea.

Passive:

Q: Count Coup: Tatanka dashes forward and strikes the enemy with his coup stick slowing the enemy and dealing physical damage. He then gains a stack of his passive.

Passive: Tatanka becomes more renown for his bravery in counting coup, and so they fear him. For every stack of renown he has the slow on his q increases.

W: Tatanka blends in to his surroundings after 1 second and can't be seen by enemy champs. He can remain hidden for as long as he doesn't activate spells or move.(think teemo.) Tatanka can reactivate this ability to leap at target enemy champion.

> E: Tatanka chants to his ancestors asking for power. He can choose the power he wants. There are 3 powers he gets by pressing Q, W, or E. Q ( Power of the Moose) Tatanka becomes as strong as a moose and can't be slowed for 2.5 seconds... W (power of the Rabbit) Tatanka gains a burst of speed for 4 seconds that decays over time... E (Power of the wolverine) Tatanka becomes ferocious in battle dealing increased damage on all of his attacks.

Ult: Tatanka chants and summons his ancestors to a location. All enemy champions are feared for .5 seconds and Tatanka gains true damage on his auto attacks for 5 seconds.

Line I said this is a rough idea for a champ. If you would like to help me by adding on this that would be great. I would like any feed back on him too.