Is there a rule that preventing a character from being multiclassed into a class they already have? For example, from being a cleric twice (of the same deity) and therefore getting four domains. Or being a specialist wizard in two different specialties.
It seems ridiculous, and I probably wouldn't allow it as a GM, but I was wondering if there's a specific rule that forbids it.
Instead of gaining the abilities granted by the next level in your character's current class, he can instead gain the 1st-level abilities of a new class, adding all of those abilities to his existing ones. This is known as “multiclassing.”
Nor can a character multiclass into an archetype of a class in which he already has levels. A "plain vanilla" cleric cannot take levels in the Cloistered Cleric archetype, for example.
