You detect magical auras. The amount of information revealed depends on how long you study a particular area or subject. 1st Round: Presence or absence of magical auras. 2nd Round: Number of different magical auras and the power of the most potent aura. 3rd Round: The strength and location of each aura. If the items or creatures bearing the auras are in line of sight, you can make Knowledge [arcana] skill checks to determine the school of magic involved in each. Make one check per aura: DC 15 + spell level, or 15 + 1/2 caster level for a nonspell effect. If the aura eminates from a magic item, you can attempt to identify its properties [see Spellcraft]. Magical areas, multiple types of magic, or strong local magical emanations may distort or conceal weaker auras. Aura Strength: An aura's power depends on a spell's functioning spell level or an item's caster level; see the accompanying table. If an aura falls into more than one category, detect magic indicates the stronger of the two. Lingering Aura: A magical aura lingers after its original source dissipates [in the case of a spell] or is destroyed [in the case of a magic item]. If detect magic is cast and directed at such a location, the spell indicates an aura strength of dim [even weaker than a faint aura]. How long the aura lingers at this dim level depends on its original power:

Original Strength | Duration of Lingering Aura

Faint | 1d6 rounds

Moderate | 1d6 minutes

Strong | 1d6 x 10 minutes

Overwhelming | 1d6 days

Outsiders and elementals are not magical in themselves, but if they are summoned, the conjuration spell registers. Each round, you can turn to detect magic in a new area. The spell can penetrate barriers, but 1 foot of stone, 1 inch of common metal, a thin sheet of lead, or 3 feet of wood or dirt blocks it. Detect magic can be made permanent with a permanency spell.

Favored by the spellcasters of Irrisen, this potent spell can disrupt spellcasters, topple enemies, and break even seemingly unstoppable charges.

Upon casting this spell, one or more giant spears of ice lance up out of the ground. Each stalagmite-like icicle affects a 5-foot square and tapers to a height of 10 feet. You may cause a number of ice spears equal to one spear for every four caster levels you possess to burst from the ground. A creature that occupies a square from which a spear extends [or that is within 10 feet of the ground below] takes 2d6 points of piercing damage and 2d6 points of cold damage per square-creatures that take up more than one square can be hit by multiple spears if the caster is high enough level. The explosive growth can also trip foes. When the spears erupt from the ground, they make a combat maneuver check against any targets that take damage from the spears, with a total bonus equal to your caster level plus your Intelligence, Wisdom, or Charisma modifier, whichever is highest. Each additional ice spear beyond the first that strikes a single foe grants a +10 bonus to this CMB check. If the check succeeds, the ice spears knock the foe prone. A successful Reflex save halves the damage and prevents the trip attempt. &nlIf you cast this spell upon an area covered with ice or snow, such as atop a glacier, frozen lake, or snow-covered field, the spears strike with additional force. Saves against the effect suffer a -2 penalty and the spell gains a +4 bonus on its combat maneuver check to trip foes. Ice spears created by this spell remain after they do their damage. They melt as normal depending on the surrounding environment. They no longer damage foes in their square, but can provide cover. An ice spear has hardness 5 and 30 hit points.