I set up a DW20 auto-enchanting setup hooked up to a blaze farm keeping my HP boiler going. Hundreds of books are made while I'm off making my next project.Random is random.
I do all my enchants at 30 and tend to do a stack of books in a sitting. I use unwanted books as aspect fodder for Thaumcraft.
I suspect we are on different versions, because DW20 hasn't gotten any Repair or Soul Steal books either.
 
				
		 
 
		
 
 
		
 A unique power system (in visuals at least) and some VERY interesting stuff all over the place.  Tons of new worldgen in the form of abandoned wizard towers and dungeons.  A wizard villager that actually fights.  NPC factions that will attack one another with various spells.  A block that can actually repair anything with durability.  And a thousand other things, of varying awesomeness.  There is already some connections with Thaumcraft (they're both based on the same source) with more to come.
  A unique power system (in visuals at least) and some VERY interesting stuff all over the place.  Tons of new worldgen in the form of abandoned wizard towers and dungeons.  A wizard villager that actually fights.  NPC factions that will attack one another with various spells.  A block that can actually repair anything with durability.  And a thousand other things, of varying awesomeness.  There is already some connections with Thaumcraft (they're both based on the same source) with more to come.