From the Advanced Player's Guide -- Master Chymist.

Associated Domain
: Destruction.

Replacement Power: The following granted power replaces the destructive aura power of the Destruction domain.

Rage (Su): At 8th level, you can enter a fearsome rage, like a barbarian, for a number of rounds per day equal to your cleric level. At 12th and 16th level, you can select one rage power. You cannot select any rage power that possesses a level requirement, but otherwise your barbarian level is equal to 1/2 your cleric level. These rounds of rage stack with any rounds of rage you might have from levels of barbarian.

Replacement Domain Spells: 2nd—bull's strength, 6th—moonstruck*.

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