At max level the Legendary Catalyst Class Mod grants the following stat bonus:
Team - Elemental Effect Damage: +62%
Borderlands 2 Class Mods can boost up to 6 different skills by 4, 5 or 6 Points. A Class Mod's Bonus Point distribution depends on its rarity, level and parts.
Here are the optimal distributions for each rarity at level 50 and above:
Legendary: (4/4/4/4/4) or (5/5/5/5/5)
The Skills an Armor comes with depend on the 2 Classes Powers and their order. Select the Main and Secondary Class to see the Armor's Prefix and which skills it can have.
Dedicated Drops are Class Mods that only drop from its dedicated sources.
Unlike World Drops who can drop almost everywhere at a small chance.
Loot Luck Formula
P = Dedicated Loot Pool Chance
L = Loot Luck
⚙️ Recipe for mentioned chances