buttered chess-piece: what advanced skills do you think your oc(s) would canonically have the most knowledge of?

hooooo this is also difficult

there's three in the runnings (for the apologist, avery doesn't have any yet) which are mithridacy, a player of chess and artisan of the red science. in terms of concious knowledge though, rather than just aptitude or ability, i think it has to go to artisan of the red science (though he doesn't actually use it all that much)

ask game here!