Question. Can this power stack on the same character if I use Hope to copy it?

YOU GO WHERE I CANNOT FOLLOW: Give Magneto a power action and choose a friendly character within 8 squares and line of fire; deal Magneto 2 unavoidable damage and modify the chosen character's combat values by +1 for the remainder of the game.

Maybe, but wouldnt it be cheaper to just use 2 Magnetos?

But Hope could use it without being KO'd

Usually powers say once per game but this one doesn't. Any more input?

This doesn't (normally) need to say once per game since using it KO's Mags.

However, once you throw Hope into the mix, there is absolutely no reason she couldn't use it more than once (especially if you can heal her every time she uses it).

You go where I cannot follow, except when I have some nice medpacs.

...or in a Bizarro tournament with some Support/Regen.