two damage isn't enough, most creatures have 3 or more hp.
It will take to long to actualy kill something. in fact, I think that infection is much better than 2 damage.
but giving it the "snipe" ability would be OK, i gues.
Don't need to be affraid about it to be OP, because it isn't, OwlsEye is still better because it is a permantent.
But since you give this ability to a creature you dont have to worry, because your opponent can just shoot the creature himself.