Alchemist Discoveries

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.
At 20th level, the Alchemist makes a grand discovery. They immediately learn two normal discoveries, but also learn a third grand discovery chosen from the list below, representing a truly astounding alchemical breakthrough of significant import. For many alchemists, the promise of one of these grand discoveries is the primary goal of their experiments and hard work.
Note: Discoveries marked with an asterisk (*) do not stack—only one such discovery may be applied to a single bomb.

Discovery	Prerequisite
Air Lung	Aquatic Subtype
Alchemical Simulacrum	Alchemist 8
Alchemical Zombie	Alchemist 8
Aromatic Extract	Alchemist 10, Infusion discovery
Bitter Pill
Bottled Ooze	Alchemist 6
Celestial Poisons	Alchemist 8
Change Alignment	Alchemist 12, Infusion discovery
Change Alignment, Greater	Alchemist 20, Change Alignment discovery, Infusion discovery
Cognatogen
Collective Memory	Cognatogen discovery
Combine Extracts	Alchemist 8
Concentrate Poison
Constructive Dyes	Alchemist 8, Divine Inks discovery.
Cytillesh Bomb
Defoliant Bomb
Delayed Bomb	Alchemist 8
Designer Poison
Dilution	Alchemist 12
Directed Bomb
Dispelling Bomb	Alchemist 6
Divine Inks
Doppelganger Simulacrum	Alchemist 10, Alchemical Simulacrum discovery
Dread Bomb	Alchemist 6, anguish bomb class feature or Anguish Bomb discovery
Elemental Mutagen
Elixir of Life	Alchemist 16
Enduring Toxin	Alchemist 8
Enhance Potion
Eternal Potion	Alchemist 16, Extend Potion discovery
Explosive Calligraphy	Alchemist 6
Explosive Missile	Alchemist 4
Extend Potion
Fast Bombs	Alchemist 8
Feral Mutagen
Fey Mutagen
Gills
Glimmering Infusion	Infusion discovery
Grand Cognatogen	Alchemist 16, Greater Cognatogen discovery or greater cognatogen class ability
Grand Fey Mutagen	Alchemist 16, Greater Fey Mutagen discovery
Grand Inspiring Cognatogen	Alchemist 16, Greater Inspiring Cognatogen discovery
Grand Mutagen	Alchemist 16, Greater Mutagen discovery
Grand Rasugen	Alchemist 16, Greater Rasugen discovery
Greater Alchemical Simulacrum	Alchemist 14, Alchemical Simulacrum discovery
Greater Cognatogen	Alchemist 12, Cognatogen discovery or cognatogen class ability
Greater Constructive Dyes	Alchemist 10, Constructive Dyes discovery, Divine Inks discovery
Greater Divine Inks	Alchemist 6, Divine Inks discovery, Improved Divine Inks discovery
Greater Fey Mutagen	Alchemist 12, Fey Mutagen discovery
Greater Inspiring Cognatogen	Alchemist 12, Inspiring Cognatogen discovery
Greater Mutagen	Alchemist 12
Greater Rasugen	Alchemist 12, able to brew a rasugen
Grounding Goo
Healing Touch	Alchemist 6, Spontaneous Healing discovery or spontaneous healing class ability
Improved Divine Inks	Alchemist 4, Divine Inks discovery
Incendiary Charge	Alchemist 4
Infuse Mutagen
Infusion
Inspired Bomb
Inspiring Cognatogen
Intuitive Understanding	Alchemist 4, Cognatogen discovery
Lasting Tinctures
Lingering Spirit	Alchemist 4
Living Pigment	Divine Inks discovery
Madness Bomb	Alchemist 12
Malignant Poison	Alchemist 10.
Material Mastery
Melancholy Bomb	Alchemist 10, anguish bomb class feature or Anguish Bomb discovery
Method to the Madness	Madness extraordinary ability
Monstrous Graft
Mummification	Alchemist 10, Preserve Organs discovery
Mutagen
Nauseating Flesh	Alchemist 12
Nostrum	Infusion discovery
Parasitic Twin	Vestigial Arm discovery x2
Penetrating Charge
Phantom Limb	Alchemist 8
Pheromones
Pickled Quasit	Alchemist 10
Plague Vector	Alchemist 14, Plague Bomb
Poison Conversion	Alchemist 6
Precise Bombs
Precise Poison
Preserve Organs
Promethean Disciple	Alchemist 6
Psychokinetic Tincture	Alchemist 4
Purging Mutagen
Ranged Baptism	Alchemist 4
Remedy Extract	Alchemist 4
Remote Detonation Bomb
Sandstone Solution
Sleeper Agent	Alchemist 12
Solid Ground
Spell Knowledge
Splitting Mutagen	Alchemist 12
Spontaneous Healing
Sticky Bomb	Alchemist 10
Sticky Poison	Alchemist 6
Strafe Bomb
Subsumed Spirit	Parasitic Twin discovery
Sunlight Acclimation
Syringe Stirge	Alchemist 6
Tainted Infusion	Delayed Bomb, Infusion
Tentacle
Thorny Bomb
Tumor Familiar
Vestigial Arm
Volumizer
Webbed Extremities
Wet Coat	Alchemist 4
Wings	Alchemist 6
Bomb Discovery	Prerequisite
Acid Bomb*
Anarchic Bombs*	Alchemist 8
Anguish Bomb*
Axiomatic Bombs*	Alchemist 8
Blackstar Bomb*	Drow, Void Bomb discovery
Blinding Bomb*	Alchemist 8
Boneshard Bomb*	Alchemical Zombie discovery
Breath Weapon Bomb*	Alchemist 6
Concussive Bomb*	Alchemist 6
Confusion Bomb*	Alchemist 8
Cursed Bomb*	Alchemist 12
Demolition Charge*	Alchemist 8
Ectoplasmic Bomb*
Explosive Bomb*
Flesh-Eating Bomb*
Force Bomb*	Alchemist 8
Frost Bomb*
Grease Bomb*	Alchemist 6
Healing Bomb*
Hellfire Bomb*	Alchemist 9, Explosive Bomb discovery, Tiefling
Holy Bombs*	Alchemist 8
Immolation Bomb*	Alchemist 3
Inferno Bomb*	Alchemist 16, Smoke Bomb discovery
Neutralizing Bomb*
Ooze Blight*
Plague Bomb*	Alchemist 8, Smoke Bomb discovery
Poison Bomb*	Alchemist 12, Smoke Bomb discovery
Profane Bomb*	Alchemist 8
Psychoactive Bomb*	Alchemist 6
Shock Bomb*
Siege Bomb*	Alchemist 12, Explosive Bomb discovery
Smoke Bomb*
Stink Bomb*	Smoke Bomb discovery
Substantiating Bomb*	Alchemist 10
Sunlight Bomb*	Alchemist 10, Blinding Bomb discovery
Tanglefoot Bomb*
Void Bomb*	Drow, Alchemist 6
Grand Discovery	Prerequisite
Awakened Intellect	Grand discovery
Eternal Youth	Grand discovery
Fast Healing	Grand discovery
Philosopher’s Stone	Grand discovery
Poison Touch	Grand discovery
True Mutagen	Grand discovery, Grand Mutagen discovery