The artwork is amazing, but the overall design and second ability remind me too much of infernus... Also the ultimate sounds too unrealistic - it will be hard to implement teleportation to different dimension and it will ruin team fights...
First ability is cool.
I would suggest to change the idea of his second ability.
Probably would be cool to have 1 main weapon - revolver, which can fire 1 bullet per 1 second and works like russian roulette - either has a bulet or not maybe 60%/40% chance.
Then second ability should be switching to 2nd weapon - shotgun with slowing and/or exploding bullets, which could be also triggered when he is out of bullets for his primary weapon.
Third ability is not bad as an idea, but I would suggest also making his shoes stars whirlwind like crazy and making wind behind him and giving him extra speed, depending on the kills of the wanted enemy. I would suggest not to switch the wanted hero, but to always be the one with most kills from enemies team, since he is the most dangerous?
For the ultimate I would suggest to be named : "Rule of Russian law" , where he makes the enemy weapon to work as his, but with chance 60/40% for e certain period, or 70/30% but with chance to fire back at him.