Battle mage guide

Reaper feels useful only if you have a godly atk range. That way the summons can actually solo plats. Otherwise, it's really not worth it.

I rather like Reaper. Mine's only Lv13 at the moment, but even below that I found it somewhat useful while training. Helped take away some HP, so when I got back around to that part of a map I'd kill quicker. I actually see a 0.5% increase per 8 minutes with a lower level Reaper than without it, and that was when it was at Lv10.

I don't know if it was asked before but.... after maxing Battle Mastery, critical rate still at 45% and no boost on attack range

Battle Mastery just increases the minimum damage you can do when you crit, IIRC.