Champion Concept: Buck, the Silent Mercenary.

I did not create this image nor do I claim any ownership of it. It is not exactly as I pictured Buck, but it is close enough.

Passive: Ammunition Every time Buck auto attacks, he loses a charge of his resource, Ammunition. Buck carries 10 Ammunition at once and after he uses all of his ammunition, he needs to reload, rendering him unable to auto attack or use abilities for 2 seconds, but refreshing his basic abilities' cooldowns.

Q: Trick Shot (6 second cooldown) Buck charges his next auto attack, dealing 150% of his base AD plus 120% of his bonus AD. This reduces his ultimate ability's cooldown by 1 second.

W: TRAPS! (20 second cooldown) Buck places a net trap in target location. This trap will stun and reveal the first enemy to walk within it for 3 seconds. While they are in the trap, allied champions deal 120% damage to them.

E: Grapple 'em! (10 second cooldown) Buck fires a grappling hook at target enemy. While they are marked with his grappling hook, the enemy cannot walk out of 750 units range or else they are snared for 2 seconds. Reactivating the ability will trip target enemy, snaring them for 1 second.

R: 3 Shots, 3 Chances Buck charges for 1 second and then enters Sniper Mode. While in Sniper Mode, Buck's next 3 auto attacks double in range (does not stack with Rapid Firecannon) and deal 200% of his AD (critical strikes deal 300% AD and Infinity Edge increases the damage to 350% AD). He also gains a greatly increased vision range during this time. After 3 auto attacks or after 10 seconds Sniper Mode ends.

Buck is designed as a Ranged AD Mid Laner or AD Jungler. His play style would be similar to that of Kindred.