Tricks are not how you defeat a great general like Culgan. Arnaud relies on instant death and accuracy down skills, neither of which will have the slightest impact on Culgan. Seed's best friend and possible life partner has trained both in the use of swords and with lighting magic. He packs a mean punch with both, and attacks twice in a round. Arnaud's offense is all smoke and mirrors- his actual damage is unimpressive in the extreme, and not likely to do anything but piss off one of the great warriors in Highland history.