rogue ricochet daily idea

[peach]

most action movies/stories have a scene where a character bounces a shot off an obstacle to hit a hidden enemy; bullets off the spitoon, arrows off the ceiling. So i have an idea to make that into a rogue power - ricochet. it would be a ranged attack only, dex vs reflex, target is enemy without line of sight, hit is 1W+dex and knocked prone. just not sure on what level or if it should be encounter or daily. obviously the higher the level the damage should be more; ie level 5 would be 2w+dex to be in line with the PHB.
looking for comments and suggestions.

 

[Frostmarrow]

In 3E the Initiate of The Order of The Bow got banked shot as a capstone power. It gave the shot sneak attack damage, if I remember correctly. Therefore I think your richocet power should be paragon level because it allows the character to ignore line of sight. LOS being a requirement for most down to earth endeavours heroic level characters can attempt.