Proposed Canon
el-Efbaum was an Erfworld Side led by The Wizard. It was once the most powerful Side on Erf. Its capital was a level 5 city of Emerald Green. The Side warred with two Sides of a green skinned tribe of men, Easteros and Westeregg, allying with Haffaton to defeat them. Pooling Haffaton's Thinkamancer and Predictamancer with el-Efbaum's Lookamancer and Findamancer, they were able to create a Summon Perfect Warlord Spell to summon Judy Gale, who made short work of both enemy sides. el-Efbaum was subsequently destroyed by Haffaton, thanks in part to the betrayal of Charlie's own daughter, Olive Branch.
 Former Inhabitants
- The Wizard, Carnymancer, Overlord, fled and became Overlord of Charlescomm.
- Olive Branch, Florist, daughter of the Wizard, defected and took control of Haffaton, deceased.
- Unnamed Findamancer, presumably croaked since Wanda said Olive murdered at least 10 siblings and nearly all the witnesses to her crimes save Charlie.
- Unnamed Lookamancer, presumably croaked since Wanda said Olive murdered at least 10 siblings and nearly all the witnesses to her crimes save Charlie.
Efbaum, Level 5, Capital Site
 Real world references
el-Efbaum sounds like "L F Baum", the writer of the Oz books.
It also may be a sideways reference to Erfword's natural censorship, since a real F-bomb would of course be booped out.