Training Swords, Leeching Swords, and Ego Swords have the added property of "if a pet is in a party, steals (up to) 100% of gained exp from other pets." A SSS 20 Ego sword steals 100%. This is what happens when you use multiple SSS 20 Ego swords in a dungeon party of 6 pets.

Number of Pets with Ego Swords Pet 1 exp Pet 2 exp Pet 3 exp Pet 4 exp Pet 5 exp Pet 6 Exp Extra Total exp
0 100% 100% 100% 100% 100% 100% 0%
1 600% 0% 0% 0% 0% 0% 0%
2 350% 350% 0% 0% 0% 0% +16.7%
3 267% 266% 266% 0% 0% 0% +33.3%
4 225% 225% 225% 225% 0% 0% +50%
5 200% 200% 200% 200% 200% 0% +67.7%
6 184% 184% 183% 183% 183% 183% +83.3%

Using one Ego Sword does not increase the total exp, it just directs it to one specific pet. Using more, however, increases the total amount of exp earned by 16.7% to 83.3%.

Unfotunately, using an all Ego Swords dungeon team causes some problems. Ego Swords are water element weapons with bonuses to attack and HP, but no bonuses to defense or speed. Most weapons have one large elemental vulnarbility. Ego swords, however, have small vulnarabilities to three: fire, wind, and earth. A SSS 20 Ego sword has a +78 affinity to water and a -26 to fire and wind and earth. Using 6 Ego Swords also eliminates the ability to use knives.

Every strategy is eventually feasable. There are two ways to make all Ego Sword dungeon teams more feasable. Enchanting the swords to level 20 (SSS 20 Ego Swords) reduces all of the elemental vulnerabilities to zero. Using gems specific to the pet's role also helps.

My experience with all Ego Swords dungeon Teams was a tradeoff. All of my Blacksmiths and Alchemists focused on the production of 24 Ego Swords. All but my water dungeon team struggled. Other weapons provide better benefits, my armor and accesories lagged in development, and my teams progressed slower through the difficulty settings earning less materials and less base experience. But my teams earned extra experience and gained levels somewhat quickly. I am currently using 24 SSS Ego Swords, all enchant level 20 with level 10 blue (HP) gems. My other equipment is now catching up. I have 4 dungeon teams of 6 pets each all able to make it to depth 3. My water team is D3 10/10/10. I was slow to start UBv4 and I do not do well with Mimics. Zeke.

Community content is available under CC-BY-SA unless otherwise noted.