Gravel, the dark tremor

Gravel would be a Mole man style champ with big digging claws

Passive: Blind courage= due to spending his life underground he has no need for sight. Blind courage makes him immune to fear effects and sight based stuns (such as Cass Ult). Also he can sense the enemy champ ground vibrations and know where they are at near him even if behind a wall.

Q: sink hole= Gravel digs a hole that causes the first enemy champ who walks on it to be slowed by up to 50% and the second enemy champ who steps on it would fall in and be stunned for 1.5 seconds. W: Slash= Gravel uses his big claws to slash the enemy dealing damage and causing a DOT effect

E: Dirt Pile= Gravel digs up dirt in a small pile blocking movement in that location for a short time.

R: Diggers Surprise= Gravel charges to target location underground causing the ground he digs under to collapse and slow enemies who walk on it. When he arrives at location he bursts from the ground knocking all enemy units away from him causing damage. If thrown units hit a wall they take extra damage and are stunned for 2 seconds.

Bio: Gravel was part of an underground society of Mole people who didnt concern themselves with the lives of those who walked the land above them. They lives happily and peacefully in their burrows and never needed a reason to roam above because they had everything they needed underground. One day his people stopped their daily routine when they heard explosions and screaming above them. It was louder then they've ever heard before. Suddenly the dirt above their head burst open with an explosion of magic. Gravel began to dig and dig trying to get away from the noise that was both scary and damaging to his ears. He could not see what was going on but he could hear everything. The hatred, the chaos, everything his people hid themselves from came crashing through their roof. Gravel continued to listen and heard cries for help from his own kind. He dug through the ground and lightning speed toward the cries, fear fueled his digging claws. Suddenly the cries stopped. He heard soldiers talking about the creatures they just slaughtered. "Its a shame, they might have been some new creatures for the Society to study" Said one of the soldiers laughing. Rage boiled inside Gravel. He burst from the ground grabbing the murderers and ripping them limb from limb before diving underground and moving on to the next targets he could find. He speed and strength were unmatched as he tore through the battlefield. When his blood lust subsided he heard a small voice say "I can help you. I can take you to the ones you seek. We can make them pay."

I know its not the best break down of a champ and definitely needs some tweaks but Id love to see this kind of champ and Id play him.