Rate my lineup boys
Unfortunately my duelist had a tendency to kill himself.
I think it happens because of floating point rounding error when he swaps health and dmg, sometimes it rounds down the result and puts his health below 1. For damage and health, arbitrary precision integers should be used instead of floating point numbers to fix this.
Also it seems random damage doesn't work correctly here, it should easily kill everyone here but it does nothing so he has to hit each one directly to kill them.