Dual-Class Rules:

When a character takes the [Dual-Class] talent, they can choose a second class on top of their base class. After selecting this second class. After selecting a second class, they receive the following bonuses:

Class Skills - If a skill was previously not a class skill and is a class skill of the second class, then it is now a class skill. Since class skills cost less skill points than cross-class skills, the additional point cost is refunded. For each one of these skills of rank of [Rank],  this means that ([Rank] * [Rank + 1] / 2) points will be refunded.

Dual-Class Skills - Depending on the class combination, there will be one dual-class skill that matches that class combination. The character is not allowed to buy ranks in the matching dual-class skill.

Class Special - The character gains full access to the second class's special.