You know, chaos should make this weapon as a noob alert. give it a ridiculous title such as "Ultimate Dooming redeemer of pwnage!" and then just put it in as a casual weapon. make it look all cool and such, something noobs would be attracted to, then warn everybody on the forums that it backfires and to not say a word when on the servers. then, some unexpecting person will grab it and think that they got the best super weapon, and try to fire it. but it makes an arc and targets the one who fired it instead.
It would also be a great suicide weapon. if you can't make it with the flag, pull this weapon out and fire it to take out anyone nearby.
A ridiculous idea, yes. but it would be funny to see. I can just see it now...
*noob finds the weapon and picks it up.*
"@W3S0m3! 1 W1LL Pwn!"
*fires it and then the redeemer comes flying at him and blows it up. I am standing nearby.*
C:" Lol. noob."
n:"WTF?!!!11111"
And what would be even more funny is when bots start to use it. they would see their enemy, shoot, and get blown up.