[Lance]

I've already talked to all of the people involved about repeatedly killing someone at the duel arena. It's bad, it's harrassment, it's disruptive to everyone because of the messages that result from this (I've given this type of behavior a nickname: spam-killing), and in addition to all of that, it's just in poor taste.

(Also, you might like to substitute 10-15, all within just a few seconds, for 'a few'.)