It's in the Bag
From RoR Wiki
It's in the Bag is a Tome of Knowledge Bestiary entry for the Basilisk.
Instructions: Order & Destruction
9k, 10k - in Black Crag
Collect six 'Lisk Meat from the Young Basilisks (Level 13 Basilisks) just north of Da Great Big Food Pot (Orc Chapter 16).
Once you have collected the 'Lisk Meats, trade them for a Pocket Item 'Bag of 'Lisk Meat':
- For Order: To Library Assistant in the Library at Altdorf. Equip it for the unlock.
- For Destruction: To Disciple's Assistant in the Lyceum at Inevitable City. Equip it for the unlock.
Rewards
- Beastial Tactic Fragment
- XP: 806
Tips
2 other Basilisk entries can be completed near:
- Entering 'Sulfur Caves' should provide the entry Cave of Stone. (Not implemented yet)
- Scales of Mourning is also found in this cave.