Tiny Tina's WonderlandsSpell Pool

Tiny Tina's Wonderlands World Drops are items that drop from any suitable Loot Source in addition to their dedicated sources.
There are around 100 unique items in the Base Game - World Drop pool, so for farming a specific weapon it's best to seek out its dedicated Loot Source.
If you still want to test your luck, you should try to maximize your Loot Luck.

Weapon - suitable Loot Source:

• All Enemies:
  Bosses, Crew Challenges, Generic Enemies, …
• All kinds of Chests
• Vending Machines
• Chaos Chamber - [Weapon Type] Loot Bunny