Book Wyrm
Book Wyrms are small Neutral mobs from Defiled Lands. Their appearance is a cross between a crocodile and a turtle.
Drops
- 0-2
Book Wyrm Scales (100% Chance) - 0-2
Raw Book Wyrm (100% Chance)
Golden Book Wyrm:
- 0-2
Golden Book Wyrm Scales (100% Chance) - 0-2 Raw Book Wyrm (100% Chance)
Behavior
- They retaliate by attacking as a group to one of their own being harmed
- Having enough damage to kill one in one hit negates this
- They make loud hissing sounds
- They can consume Enchanted Books to spit out new ones
- The book it spits out is random but affected by Enchanting Level and whether it is Golden See: #Properties
Properties
Book Wyrms are a unique mob with a useful utility. They allow the player to recycle Enchantment Books into potentially more useful ones.
Using a 
Book Wyrm Analyzer displays a Book Wyrm's stats and qualities:
- Digesting Time: How long -in ticks- it takes for it to digest one Digested Level, ranging from 255 to 1
- Digested Levels: How many levels in Enchanted Books the Book Wyrm has digested and has at its disposal. Every book has its own value, ranging from 0 to 30
- Enchanting Level: What level of books the Book Wyrm can produce, ranging from 0 to 30
- Mating Time: How long until it can mate. Mating has a 5min cooldown
- A newborn takes to mature 20min before it can mate
- Golden Status: If the Book Wyrm is golden, it will mention it having special hide
Golden Book Wyrm
Golden Book Wyrm is a rare variant with the added bonus of being able to spit out treasure enchants such as Mending. They are a 1% chance from normal breeding or naturally spawning, a 4% Chance when one Golden Book Wyrm breeds with regular one, and a 10% chance when two Golden Book Wyrms breed.
Spawning
- Book Wyrms spawn in groups in a Defiled Biome during chunk generation
- Naturally spawned Wyrms have Enchanting Levels between 3 and 6 and Digesting Times between 160 and 240 ticks See: #Properties
Breeding
- Book Wyrms can be bred with
Foul Candy and the In Love effect (e.g., 
Love-Arrow or 
Love-Arrow (AOE)) - The offspring's stats are dependent on its parents
Tips
- Love-Arrow (AOE) and Switch-Bow can be used for easy mass breeding
- Diamond Battleaxe has enough base damage to reliably one hit a Wyrm without agroing others
Tags
The NBT tags for the important attributes are Digest(0-255), MaxLvl(0-30) and Golden(true/false).
To spawn a bookwyrm with specific attributes use for example
/summon defiledlands:book_wyrm ~ ~ ~ {Golden:true, MaxLvl:30, Digest:1}