New ADC Champion Idea

Me and my friend had an idea for a character named Grain: The Sandstorm Sniper. He is Weasel from Zaum but lives in Shurima and travels around. Grain is ranged character with a sniper rifle. His Passive is called Playing Dirty: When ever Grain is hidden in a bush or in his sandstorm his next auto attack he kicks sand into an enemies eyes blinding them with a 50 second cooldown also enemies who are blinded or have their backs to grain take increased damage. His Q is called Tracer: Grain shoots a tracer bullet into the enemy enemies hit with the tracer bullet will be revealed for 4 seconds Grain will gain a 25% movement speed to enemies marked with a tracer bullet (25 Sec Cool Down) His W is called Sandstorm: Grain stores charges up to three. each charge can be placed creating an area with a small sandstorm. enemies caught in the sandstorm are revealed also they are slowed. it takes 12 sec for a sandstorm His E is called Sand sprout: Grain places a special mine that when an enemy steps on it sand shots them upwards causing them to be airborn. (15 second cooldown) Finally his Ult is called Ready, Aim, Fire: The ability channels for 8 seconds every 2 seconds Grain takes a shot each shot hits a vital area with an added affect. The First Shot Grain shoots the target in the leg causing them to slow down, shot two Grain shoots the target in the waist also slowing them, shot number three Grain shoots the target in the chest causing bleeding damage, and Finally The last Shot will be a headshot causing critical damage (100 second cooldown) Grain is a weasel with a white stripe on his stomach, infrared goggles on his forehead, a bandanna around his neck, and a dark green cape with bullet holes in it.