1) If I bless my weapon with the Bless Weapon utility power, and make an attack with the weapon, does that count as attacking with a power with the radiant keyword? When I use a flaming longsword to deal fire damage with my powers, I know that the powers inherit the fire keyword from the weapon. Does a similar thing happen with the Bless Weapon utility power?
Technically no. However, feel free to play that way if your Dungeon Master allows it. It's a bit unusual that it doesn't.
2) The reason that I want to know this is that I would like to use the bless weapon utlity power in conjunction with feats and items, such as a holy avenger or the font of radiance feat, that have additional effects when you use powers with the radiant keyword. Does Bless Weapon allow you to benefit from such things?
Not as it currently is.
WoG同理.
