Granted Powers: You can draw the powers of the Earth's molten substances, and create an unrivalled volcanic fury.
Spit Magma (Su): As a standard action, you may spit a blob of molten magma towards an opponent within 30 feet as a ranged touch attack. The magma does 1d6 points of fire damage and causes targets to immediately catch on fire (see rules for catching on fire). The target must use a standard action to clean off the magma or take an additional 1d3 points of damage each round it remains. You can use this ability a number of times per day equal to 3 + your Wisdom modifier.
Volcanic Gas (Su): Once per day, you may create a crack in the earth and cause volcanic fumes to rise up from its depths. The cloud of gas functions like fog cloud, but all those in the cloud also take 1d3 points of temporary Constitution damage as a poison effect unless they make a successful Fortitude save (DC equal to 10 + 1/2 your cleric level + your Wisdom modifier).
Domain Spells: 1st—produce flame, 2nd—tar ball, 3rd—molten orb, 4th—volcanic storm, 5th—obsidian flow, 6th—geyser, 7th—tar pool, 8th—wall of lava, 9th—meteor swarm.