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Divine Tythe Free Action Feat 4

Champion Cleric Exemplar Oracle Thaumaturge
Prerequisite: Worship Abadar
Frequency: Once per day

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All money flows from you and to you. Before you cast a divine spell, you can sacrifice a number of gold pieces equal to twice the rank of the next spell you cast. If you do so, you can a +1 circumstance bonus to attack and damage rolls as well as to the save DC of the spell.

Thoughts?