Why read books when you can do this?
To keep my end of the deal with Hermaeus Mora, Sero and I returned to Frea's village where I rather easily convinced her shaman dad to surrender his secret knowledge of horkers (walruses). The daedric prince took it in a most violent fashion (involving tentacle insertion) and then kept his end of the deal, giving me a dragon shout that could counter Miraak. Humorously enough, to reach this final mission I simply had to read a black book in my backpack, which transported me near Miraak's temple in Apocrypha.
After the usual shenanigans with the resident abominations, I finally got to use my fully powered Bend Will shout on one of Miraak's dragons which let me mount it for some pretty cool (and quite uncontrolled) dragon flight. After a short jaunt, it set me down at the temple's summit to face his old master who was nice enough to talk first before starting the duel.
So shiny it hurts my eyes...
Miraak's use of dragon shouts was indeed impressive. He even had one which absorbed his remaining minion dragons to fully heal himself which was pretty cool. He was actually dangerous enough to convince me to use my swords too (I started by using fists, just to savour the combat). Ultimately though, Hermaeus Mora stole my kill and ended Miraak once and for all. Death by tentacle insertion.
Miraak got raped. :P
The only worse fate is for your enemy to then make a stuffed figure out of you.