Alchemist

An Alchemist is an expert at combining reagents to produce mystical effects. Alchemists use their creations to give life and to leech it away. Alchemy is the oldest of artificer traditions, and its versatility has long been valued during times of war and peace.

Merging the 2017 UA with the actual Alchemist (plus some minor tweaks) this is the closest to a "real alchemist" I could wish for. With some corrections to the scalling of the UA and quality of life adjustments to the base Alchemist abilities, I've highlighted the changes in bold.

 

Tool Proficiency

When you adopt this specialization at 3rd level, you gain proficiency with alchemist's supplies. If you already have this proficiency, you gain proficiency with one other type of artisan's tools of your choice.

 

Alchemist Spells

Starting at 3rd level, you always have certain spells prepared after you reach particular levels in this class, as shown in the Alchemist Spells table. These spells count as artificer spells for you, but they don’t count against the number of artificer spells you prepare. 

Artificer Level	Spell
3rd	Healing Word, Ray of Sickness
5th	Flaming Sphere, Melf's Acid Arrow
9th	Gaseous Form, Mass Healing Word
13th	Blight, Death Ward
17th	Cloudkill, Raise Dead

 

Alchemist's Satchel

At 3rd level, you craft an Alchemist’s Satchel, a bag of reagents that you use to create a variety of concoctions. The bag and its contents are both magical, and this magic allows you to pull out exactly the right materials you need for your Alchemical Formula options, described below.

After you use one of those options, the bag reclaims the materials.

If you lose this satchel, you can create a new one over the course of three days of work (eight hours each day) by expending 100 gp worth of leather, glass, and other raw materials.

This Alchemist's Satchel can be used as alchemist's supplies for any purposes including as a Spellcasting Focus for your Artificer Spells.  Despite being magical, it can be infused as if it were a nonmagical Spellcasting Focus.

 

Alchemical Formula

At 3rd level, you learn four Alchemical Formula options: Alchemical Fire, Alchemical Acid, and two other option of your choice. You learn an additional formula of your choice at 5th, 9th, and 15th levels. To use any of these options, your Alchemist’s Satchel must be within reach. If an Alchemical Formula option requires a saving throw, the DC is 8 + your proficiency bonus + your Intelligence modifier.

 Alchemical Fire. As an action, you can reach into your Alchemist’s Satchel, pull out a vial of volatile liquid, and hurl the vial at a creature, object, or surface within 30 feet of you (the vial and its contents disappear if you don’t hurl the vial by the end of the current turn). On impact, the vial detonates in a 5-foot radius. Any creature in that area must succeed on a Dexterity saving throw or take 1d6 fire damage.

This formula’s damage increases by 2d6 when you reach certain levels in this class: 5th level (3d6), 11th level (5d6), 17th level (7d6).

 Alchemical Acid. As an action, you can reach into your Alchemist’s Satchel, pull out a vial of acid, and hurl the vial at a creature or object within 30 feet of you (the vial and its contents disappear if you don’t hurl the vial by the end of the current turn). The vial shatters on impact. A creature must succeed on a Dexterity saving throw or take 1d6 acid damage. An object automatically takes that damage, and the damage is maximized.

This formula’s damage increases by 2d6 when you reach certain levels in this class: 5th level (3d6), 11th level (5d6), 17th level (7d6).

 Healing Draught. As an action, you can reach into your Alchemist’s Satchel and pull out a vial of healing liquid. A creature can drink it as an action to regain 1d8 hit points. The vial then disappears. A creature can regain hit points from this alchemical formula a number of times equal your proficiency bonus, and can’t do so again until it finishes a long rest. If not used, the vial and its contents disappear after 1 hour. While the vial exists, you can’t use this formula.

This formula’s healing increases by 2d8 when you reach certain levels in this class: 5th level (3d8), 11th level (5d8), 17th level (7d8).

 Smoke Stick. As an action, you can reach into your Alchemist’s Satchel and pull out a stick that produces a thick plume of smoke. You can hold on to the stick or throw it to a point up to 30 feet away as part of the action used to produce it. The area in a 10-foot radius around the stick is filled with thick smoke that blocks vision, including darkvision. The stick and smoke persist for 1 minute and then disappear. After using this formula, you can’t do so again for 1 minute.

 Swift Step Draught. As a bonus action, you can reach into your Alchemist’s Satchel and pull out a vial filled with a bubbling, brown liquid. As an action, a creature can drink it. Doing so increases the creature’s speed by 20 feet for 1 minute, and the vial disappears. If not used, the vial and its contents disappear after 1 minute. After using this formula, you can’t do so again for 1 minute.

 Tanglefoot Bag. As an action, you can reach into your Alchemist’s Satchel and pull out a bag filled with writhing, sticky black tar and hurl it at a point on the ground within 30 feet of you (the bag and its contents disappear if you don’t hurl the bag by the end of the current turn). The bag bursts on impact and covers the ground in a 5- foot radius with sticky goo. That area becomes difficult terrain for 1 minute, and any creature that starts its turn on the ground in that area has its speed halved for that turn. After using this formula, you can’t do so again for 1 minute.

 Thunderstone. As an action, you can reach into your Alchemist’s Satchel and pull out a crystalline shard and hurl it at a creature, object, or surface within 30 feet of you (the shard disappears if you don’t hurl it by the end of the current turn). The shard shatters on impact with a blast of concussive energy. Each creature within 10 feet of the point of impact must succeed on a Constitution saving throw or be knocked prone and pushed 10 feet away from that point.

 

Alchemical Savant

At 5th level, you've developed masterful command of magical chemicals, enhancing the healing and damage you create through them. You gain the following effects:

• Whenever you create an item or cast a spell using your alchemist's supplies as the spellcasting focus, you gain a bonus to one roll of the spell. That roll must restore hit points or be a damage roll that deals acid, fire, necrotic, or poison damage, and the bonus equals your Intelligence modifier (minimum of +1). Furthermore, at level 10, your Magic Item Adept feature also affects the production of adventure gear produced by your alchemist supplies.

 

Restorative Reagents

Starting at 9th level, you can incorporate restorative reagents into some of your works:

• Whenever a creature drinks an Alchemical Formula or an item you created, the creature gains temporary hit points equal to 2d6 + your Intelligence modifier (minimum of 1 temporary hit point).
• You can cast Lesser Restoration without expending a spell slot and without preparing the spell, provided you use alchemist's supplies as the spellcasting focus. You can do so a number of times equal to your Intelligence modifier (minimum of once), and you regain all expended uses when you finish a long rest.

 

Chemical Mastery

By 15th level, you have been exposed to so many chemicals that they pose little risk to you, and you can use them to quickly end certain ailments:

• You gain resistance to acid damage and poison damage, and you are now immune to the poisoned condition.
• You can cast Greater Restoration and Heal without expending a spell slot, without preparing the spell, and without providing the material component, provided you use alchemist’s supplies as the spellcasting focus. Once you cast either spell with this feature, you can't cast that spell with it again until you finish a long rest.