At 2nd level, and then again every 2 levels thereafter (up to 18th level), an alchemist makes an incredible alchemical discovery. Unless otherwise noted, an alchemist cannot select an individual discovery more than once. Some discoveries can only be made if the alchemist has met certain prerequisites first, such as uncovering other discoveries. Discoveries that modify bombs that are marked with an asterisk (*) do not stack. Only one such discovery can be applied to an individual bomb. The DC of any saving throw called for by a discovery is equal to 10 + 1/2 the alchemist's level + the alchemist's Intelligence modifier.
Acid bomb
* When the alchemist creates a bomb, he can choose to have it inflict acid damage. Creatures that take a direct hit from an acid bomb take an additional 1d6 points of acid damage 1 round later.
Combine extracts
When the alchemist creates an extract, he can place two formulae into one extract. When the extract is consumed, both formulae take effect. This extract has a level two levels higher than the highest-level formulae placed in the extract. An alchemist must be at least 8th level before selecting this discovery.
The alchemist can combine two doses of the same poison to increase their effects. This requires two doses of the poison and 1 minute of concentration. When completed, the alchemist has one dose of poison. The poison's frequency is extended by 50% and the save DC increases by +2. This poison must be used within 1 hour of its creation or it is ruined.
Concussive bomb
* When the alchemist creates a bomb, he can choose to have it inflict sonic damage. Concussive bombs deal 1d4 points of sonic damage, plus 1d4 points of sonic damage for every odd-numbered level, instead of 1d6. Creatures that take a direct hit from a concussive bomb are deafened for 1 minute unless they succeed at a Fortitude save. An alchemist must be at least 6th level before selecting this discovery.
Delayed bomb
The alchemist can place a bomb so that it explodes a number of rounds after the alchemist ceases contact with the bomb. This delay can be any number of rounds as chosen by the alchemist, up to a number of rounds equal to his level. If at any point the alchemist reclaims possession of the delayed bomb, he can end the timer and prevent the bomb's detonation. A delayed bomb detonates immediately if any other creature attempts to touch or move it, or if the bomb's contents are removed from the vial (such as if the vial breaks). The bomb deals damage as if it scored a direct hit to any creature in the square with the bomb when it detonates, and splash damage to all adjacent creatures as normal. An alchemist cannot have more than one delayed bomb at one time. If he creates another delayed bomb, the previous bomb becomes inert. Dispel magic can neutralize a delayed bomb, as can a successful Disable Device check (DC equals 10 + the alchemist's level + the alchemist's Intelligence modifier). An alchemist must be at least 8th level before selecting this discovery.
Dilution
Once per day, the alchemist can dilute any one potion or elixir, creating two doses of the same potion from one. Diluting a potion costs a number of gp equal to one-quarter of the potion's market value. A potion that has been diluted cannot be diluted again. This discovery cannot be used to dilute extracts or mutagens. An alchemist must be at least 12th level before selecting this discovery.
Dispelling Bomb
When the alchemist creates a bomb, he can choose to have it dispel magic effects instead of deal damage. Creatures that take a direct hit from a dispelling bomb are subject to a targeted dispel magic spell, using the alchemist's level as the caster level. This cannot be used to target a specific spell effect. The alchemist must be at least 6th level before selecting this discovery.
Elixir of life
Once per day, the alchemist can brew an elixir of life. This special concoction costs 25,000 gp to create and takes 1 hour of work. An elixir of life, when administered by the alchemist who brewed it, restores life to a dead creature as per the spell true resurrection. Alternatively, the alchemist himself may drink the elixir of life, after which point he is immediately targeted with a resurrection spell the next time he is killed. Used in this manner, the effects of an elixir of life persist only for a number of days equal to the alchemist's Intelligence modifier; if he does not die before that time expires, the effects of the elixir of life end. An alchemist must be at least 16th level before selecting this discovery.
Enhance potion
A number of times per day equal to his Intelligence modifier, the alchemist can cause any potion he drinks to function at a caster level equal to his class level.
Eternal potion
If an alchemist drinks a potion that he extends, the effects of that potion become permanent until he chooses to make another potion effect permanent. An alchemist must be at least 16th level and must possess the extend potion discovery before selecting this discovery.
Explosive bomb
* The alchemist's bombs now have a splash radius of 10 feet rather than 5 feet. Creatures that take a direct hit from an explosive bomb catch fire, taking 1d6 points of fire damage each round until the fire is extinguished. Extinguishing the flames is a full-round action that requires a Reflex save. Rolling on the ground provides the target with a +2 to the save. Dousing the target with at least 2 gallons of water automatically extinguishes the flames.
Extend potion
A number of times per day equal to his Intelligence modifier, the alchemist can cause any potion he drinks that does not have an instantaneous duration to function at twice its normal duration. This does not apply to extracts.
Fast bombs
An alchemist with this discovery can quickly create enough bombs to throw more than one in a single round. The alchemist can prepare and throw additional bombs as a full-round action if his base attack bonus is high enough to grant him additional attacks. This functions just like a full-attack with a ranged weapon. An alchemist must be at least 8th level before selecting this discovery.
Whenever the alchemist imbibes a mutagen, he gains two claw attacks and a bite attack. These are primary attacks and are made using the alchemist's full base attack bonus. The claw attacks deal 1d6 points of damage (1d4 if the alchemist is Small) and the bite attack deals 1d8 points of damage (1d6 if the alchemist is Small). While the mutagen is in effect, the alchemist gains a +2 competence bonus on Intimidate skill checks.
Force bomb
* When the alchemist creates a bomb, he can choose to have it inflict force damage. Force bombs deal 1d4 points of force damage, plus 1d4 points of force damage for every odd-numbered level, instead of 1d6. Creatures that take a direct hit from a force bomb are knocked prone unless they succeed on a Reflex save. An alchemist must be at least 8th level before selecting this discovery.
Frost bomb
* When the alchemist creates a bomb, he can choose to have it inflict cold damage. Creatures that take a direct hit from a frost bomb are staggered on their next turn unless they succeed on a Fortitude save.
The alchemist's mutagen now grants a +6 natural armor bonus, a +8 alchemical bonus to one ability score (Strength, Dexterity, or Constitution), a +6 alchemical bonus to a second physical ability score, and a +4 alchemical bonus to a third physical ability score. The alchemist takes a –2 penalty to his Intelligence, Wisdom, and Charisma as long as the mutagen persists (see Mutagen). An alchemist must be at least 16th level and must possess the greater mutagen discovery before selecting this discovery.
The alchemist's mutagen now grants a +4 natural armor bonus, a +6 alchemical bonus to one physical ability score (Strength, Dexterity, or Constitution), and a +4 alchemical bonus to a second physical ability score. The alchemist takes a –2 penalty on both associated mental ability scores as long as the mutagen persists. An alchemist must be at least 12th level before selecting this discovery.
Infuse mutagen
When the alchemist creates a mutagen, he can infuse it with an extra bit of his own magical power. This inflicts 2 points of Intelligence damage to the alchemist and costs 1,000 gp in rare reagents, but the mutagen created persists on its own and is not rendered inert if the alchemist creates another mutagen. This allows an alchemist to create different types of mutagens and keep them handy for emergencies. This does not allow an alchemist to gain the effects of multiple mutagens—only the most recently imbibed mutagen has any effect.
Inferno bomb
* The effects of the smoke created by an alchemist's bomb duplicate the effects of incendiary cloud instead of fog cloud, filling an area equal to twice the bomb's splash radius for 1 round per level. An alchemist must be at least 16th level and must possess the smoke bomb discovery before selecting this discovery.
When the alchemist creates an extract, he can infuse it with an extra bit of his own magical power. The extract created now persists even after the alchemist sets it down. As long as the extract exists, it continues to occupy one of the alchemist's daily extract slots. An infused extract can be imbibed by a non-alchemist to gain its effects.
Madness bomb
The alchemist's bombs do more than sear flesh—they sear the mind. A creature that takes a direct hit from a madness bomb takes damage from the bomb plus 1d4 points of Wisdom damage. Reduce the amount of normal damage dealt by the bomb by 2d6 (so a bomb that would normally deal 6d6+4 points of damage deals 4d6+4 points of damage instead). The amount of Wisdom damage dealt by a madness bomb is reduced by 1 for each madness bomb that hit the target in the past 24 hours, to a minimum of 1 point of Wisdom damage. An alchemist must be at least 12th level before selecting this discovery.
* The effects of the smoke created by an alchemist's bomb duplicates the effects of cloudkill instead of fog cloud, filling an area equal to twice the bomb's splash radius for 1 round per level. An alchemist must be at least 12th level and must possess the smoke bomb discovery before selecting this discovery.
Whenever the alchemist throws a bomb, he can select a number of squares equal to his Intelligence modifier that are not affected by the splash damage from his bombs. If the bomb misses, this discovery has no effect.
Shock bomb
* When the alchemist creates a bomb, he can choose to have it inflict electricity damage. Creatures that take a direct hit from a shock bomb are dazzled for 1d4 rounds.
* When the alchemist creates a bomb, he can choose to have it create a cloud of thick smoke when it detonates. The cloud functions as fog cloud, filling an area equal to twice the bomb's splash radius for 1 round per level.
Sticky bomb
The effects of the alchemist's bombs are persistent and continue to damage creatures for 1 round after the initial damage. Creatures that take a direct hit from a sticky bomb take the splash damage 1 round later. Bombs that have effects that would normally occur 1 round later instead have those effects occur 2 rounds later. An alchemist must be at least 10th level before selecting this discovery.
Sticky poison
Any poison the alchemist creates is sticky—when the alchemist applies it to a weapon, the weapon remains poisoned for a number of strikes equal to the alchemist's Intelligence modifier. An alchemist must be at least 6th level before selecting this discovery.
Stink bomb
* The effects of the smoke created by an alchemist's bomb can duplicate the effects of stinking cloud instead of fog cloud, filling an area equal to twice the bomb's splash radius for 1 round. An alchemist must possess the smoke bomb discovery before selecting this discovery.