Focus (Ex): A Frost Archer has a limited pool of extreme mental acuity that she may draw upon to produce potent physical or nigh-magical effects. This pool, known simply as Focus, consists of 100 points. Each of the Frost Archer's abilities cost a certain amount of Focus, as noted in their descriptions.

While below full Focus, a Frost Archer regains 10 Focus at the beginning of each of her turns. While at full Focus, the Frost Archer's critical threat range with ranged weapons increases by 1 per Frost Archer level, applied after all other critical threat range increases, and she may expend 25 Focus to automatically confirm a critical threat of her choice.

Frost Shot (Su): At will, a Frost Archer may elect to bestow the Frost weapon property upon any ammunition she fires. In addition to the standard effects, enemies struck by ammunition imbued with this effect are also slowed, reducing their movement speed by half and imposing a penalty to AC and Reflex saves equal to the Frost Archer's level in this prestige class for one round. A successful fortitude save, DC (10+1/2HD+Dex mod) negates the slowing and penalties.

Each unit of ammunition fired with this effect consumes 5 Focus.

When the Frost Archer attains the 4th level in this prestige class, all ammunition imbued with Frost Shot instead gains the Icy Burst weapon property.

Volley (Ex): As a full-round action, a Frost Archer may fire a number of arrows up to her level in this prestige class at each enemy within a 30-foot cone in front of her. The Frost Archer makes a single attack roll against each enemy at her highest attack bonus; if a given attack is successful against a foe, then all of the arrows fired at it hit. The only effects calculated when determining the damage dealt by Volley are the base damage of the weapon, any special properties of the weapon, and any special properties of the ammunition.

The base Focus cost of Volley can be seen on the table below. In addition, the Frost Archer may elect to apply Frost Shot to the entire Volley - doing so costs an additional amount of Focus equal to 5 times the number of arrows fired at each enemy (calculate once, not for the entire volley). E.g.: when firing a Volley of four arrows at each enemy within range, the total extra cost to imbue all arrows with Frost Shot is 20.

Volley can be used every 1d6 rounds.

{table=head]Arrows fired (per enemy) | Focus Cost
1 | 10
2 | 23
3| 36
4| 50[/table]

Hawkshot (Su): As a swift action, a Frost Archer can fire a translucent bolt of energy from her bow in place of an arrow. Midflight, the arrow transforms into a sentry with the form of a hawk, which flies in place in the square the attack was directed at. As a move action, the Frost Archer can will herself to see through the hawk's eyes - the hawk possesses the same visual capabilities of the Frost Archer, plus blindsight with a 30-foot range. The Frost Archer can freely attack while viewing through the hawk's eyes, but cannot move beyond taking a 5-foot step each round. The Frost Archer can resume viewing through her own eyes as a free action.

The hawk cannot attack in any way; it is never allowed an attack roll or a saving throw. It cannot be killed, but it dissipates if it takes 6 points of damage from area attacks, then reappears in the same location two rounds later. If you move beyond the ability's range (calculated as three range increments of the weapon used to fire the Hawkshot), the hawk ceases to exist.

Firing a Hawkshot restores 5 Focus per Frost Archer level.

This ability can be used every 2d6 rounds.

Enchanted Crystal Arrow (Su): Once per encounter, as an attack action (that is, an attack derived from a standard or full-attack action) a Frost Archer can fire a huge, quasi-real arrow of shimmering blue force along with a normal unit of ammunition. The Crystal Arrow affects a path 15-feet wide, but can pass through solid objects with no effort. The Crystal Arrow stops when the normal arrow it is fired with collides with a solid object - either a barrier or an enemy - or when the Crystal Arrow's path comes in contact with an enemy itself. In either case, all enemies within 20 feet of the point of impact take 1d6 cold damage per two HD the Frost Archer possesses, and must make a DC (10+1/2HD+Dex mod) fortitude save or be stunned for one round. If the arrow traveled at least 100 feet during its flight, the stun duration is increased to 2 rounds, and the save DC increases by 1.

Enchanted Crystal Arrow consumes 50 Focus when fired.