Siberys
Adventurer
[offtopic]In 3e (dunno if it's legal in 4e), a commoner railgun involved getting a very large number of commoner to get into a single line, all readying an action to take an item (usually a quarterstaff, IIRC) from the person to their right and pass it to the person to their left. Thus, one could argue that a single quarterstaff could travel immense distances in 6 seconds (a round), thereby justifying essentially ballistic-level damage. A similar concept in 4e is FTeLf - a sufficiently large group of elves who all have the Light Step feat could travel faster than light, by the numbers. No sane DM ever allowed these in play, tho.[/offtopic]