The damage would have to be smaller for both projectiles to fit the challenge reasonably. I would make the Accurator and Inaccurator two different weapons in one tier, and Decider would be Tier III. Decider feels to random to be used reasonably (what would happen if both arrows hit the ground at the same time?). Attractor sounds too much like Attractoids with aiming and one projectile. Lastly, you can't specify an area of damage, so why let this one weapon break all the game physics and rules?