At least i'm confident Moon Mages can destroy thieves still. If anyone is doubting ask Nebby how it feels to lose so bad he has to attack a 3 week old commoner in retaliation. Its rather entertaining really he considers fleeing and attacking my IRL wife's month old commoner hunting snow beasts a course of action after being defeated so soundly. The log is on reddit.
"An' I'm learnin' 'ere in London what the ten-year soldier tells; If you've 'eard the East a-callin', you won't never 'eed naught else. No! you won't 'eed nothin' else"