The BBC series is far better than the excellent NBC one. Now go watch it.
This is not me but I have been known to dance like David Brent on occasion.
So using Marksman allows you to re-roll all the dice used for a combat check, but do the successes gained from the original roll still remain? Or do they disappear (i.e. the re-roll is a mulligan)?
Because if it's the former, that seems a bit too powerful. Someone had this card in my last game, and it really helped out during the endgame boss fight.