I havent read what others said. Basically 8/10/22 is bad idea, it works with Dwarven Defender, but not with WM. Ofc its playable but its not good, the only thing you get from WM levels is AB, which you get much more if you level bard instead and you get many buffs.
I would build this as 23bard 10rdd 7wm to get WM multiplier and threat, lasting inspiration and 23lvl of bard which means +5ac and -5ac for enemies ie. +5ab uncapped, +12 to all skills, much more skill poits all bard spells.
Of course throw scythe and pick scimitar+shield. It will still be a bit feat starved, but otherwise it will be on par with any other bard20+/rdd10 combo. The advantage of this build is very high devastating critical DC and 10-20 critical threat range. But its playable even in worlds withou devastating or with many creeps immune to critical/devastating.