Knowledge Substitution (3.5e Feat)
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Knowledge Substitution [General]
Use ranks in one Knowledge skill for others.
Benefit: You can substitute your ranks in one Knowledge skill for another. As long as you have 4 or more ranks in any one Knowledge skill, you may use your ranks for that skill for any other Knowledge that you have at least one rank in.
Normal: Normally you use each Knowledge skill with its own ranks.
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