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Cold Specialist

Wizards who are cold specialists focus on arcane cold of all schools, rather than studying one school of magic as most wizards do.

Resistance (Ex)

You gain cold resistance 10. At 11th level, this resistance increases to 15. At 20th level, this resistance changes to immunity to cold damage.

Intense Cold (Su)

Whenever you cast a spell that deals cold damage, add 1/2 your wizard level to the damage (minimum +1). This bonus only applies once to a spell, not once per missile or ray, and cannot be split between multiple missiles or rays. At 20th level, whenever you cast a spell with the [cold] descriptor you can roll twice to penetrate a creature’s spell resistance and take the better result.

Cold Mastery (Su)

At 6th level, anytime you are within 30 feet of a creature of the [cold] subtype, as a free action you can make a Knowledge (arcana) check to learn its type (and all subtypes) and any information usually gained from a Knowledge check appropriate to its type. The DC of this check is 10 + the creature’s CR.

You also make a Knowledge (arcana) check as a free action whenever anyone within your line of sight casts a spell with the [cold] descriptor. The DC of this check is 15 + the spell’s level. On a successful check you know the name, level, and general effect of the spell being cast.

Any time a spellcaster casts a spell with the [cold] or [fire] descriptors, and you have identified the spell being cast, you may use any prepared spell of the same or higher level in an attempt to counterspell the [cold] or [fire] spell.