Stormborn
Explorer
First, why is this in general? Second, Blue Lantern, are you just trying to get a yes-no answer or are you actually playing in a game and want this to be a PC? Check out Mutants and Masterminds 2e and Ultimate Power for the same system if you want a system that might be able to handle it (not saying for sure that it can, but it might). The power ring is pretty powerful in the hands of someone with an imagination. In a game, without a writer to control the character and throw up plot complications, it would like be too powerful to allow purelly as is regardless of the system. There would have to be a limiting factor, perhaps a skill check, to prevent abuse, not to mention a GM who could adapt well on the fly.
Now, as for DnD possibilites, the Warlock has mechanics that might replicate some of the GLs powers. You could just say that the blasts were blue.
Now, as for DnD possibilites, the Warlock has mechanics that might replicate some of the GLs powers. You could just say that the blasts were blue.