# The Formless
*[vessel](vessel.md): Sealed Spirit*
*Source: The Vessel p. 10*
> [!tldr] Class and Feature Progression
>
> <table class="class-progression">
> <thead>
> <tr><th colspan='3'></th></tr>
> <tr class="class-progression"><th class"level">Level</th><th class"pb">PB</th><th class"feature">Features</th></tr>
> </thead><tbody>
> <tr class="class-progression"><td class"level">1st</td><td class"pb">+2</td><td class"feature"></td></tr>
> <tr class="class-progression"><td class"level">2nd</td><td class"pb">+2</td><td class"feature"></td></tr>
> <tr class="class-progression"><td class"level">3rd</td><td class"pb">+2</td><td class"feature"><a href='#The Formless (Level 3)' class='internal-link'>The Formless</a></td></tr>
> <tr class="class-progression"><td class"level">4th</td><td class"pb">+2</td><td class"feature"></td></tr>
> <tr class="class-progression"><td class"level">5th</td><td class"pb">+3</td><td class"feature"></td></tr>
> <tr class="class-progression"><td class"level">6th</td><td class"pb">+3</td><td class"feature"><a href='#Drain Vitality (Level 6)' class='internal-link'>Drain Vitality</a></td></tr>
> <tr class="class-progression"><td class"level">7th</td><td class"pb">+3</td><td class"feature"></td></tr>
> <tr class="class-progression"><td class"level">8th</td><td class"pb">+3</td><td class"feature"></td></tr>
> <tr class="class-progression"><td class"level">9th</td><td class"pb">+4</td><td class"feature"></td></tr>
> <tr class="class-progression"><td class"level">10th</td><td class"pb">+4</td><td class"feature"></td></tr>
> <tr class="class-progression"><td class"level">11th</td><td class"pb">+4</td><td class"feature"></td></tr>
> <tr class="class-progression"><td class"level">12th</td><td class"pb">+4</td><td class"feature"></td></tr>
> <tr class="class-progression"><td class"level">13th</td><td class"pb">+5</td><td class"feature"></td></tr>
> <tr class="class-progression"><td class"level">14th</td><td class"pb">+5</td><td class"feature"><a href='#Consume Strike (Level 14)' class='internal-link'>Consume Strike</a></td></tr>
> <tr class="class-progression"><td class"level">15th</td><td class"pb">+5</td><td class"feature"></td></tr>
> <tr class="class-progression"><td class"level">16th</td><td class"pb">+5</td><td class"feature"></td></tr>
> <tr class="class-progression"><td class"level">17th</td><td class"pb">+6</td><td class"feature"></td></tr>
> <tr class="class-progression"><td class"level">18th</td><td class"pb">+6</td><td class"feature"><a href='#Primordial Hunger (Level 18)' class='internal-link'>Primordial Hunger</a></td></tr>
> <tr class="class-progression"><td class"level">19th</td><td class"pb">+6</td><td class"feature"></td></tr>
> <tr class="class-progression"><td class"level">20th</td><td class"pb">+6</td><td class"feature"></td></tr>
> </tbody></table>
^class-progression
## Class Features
### The Formless (Level 3)
Before the world was shaped, horrible things slithered about the darkness. Formless monsters with only one desire, to eat and consume anything they could. These shapeless creatures of hunger are known as Formless, and even now, they gnaw the roots of the world, trapped deep below the material plane.
### Amorphous Shape (Level 3)
The oozing Spirit bound to your soul allows you to reshape yourself in unnatural ways. You can move through gaps as narrow as 1-inch without having to squeeze. However, this ability has no effect on anything you are wearing or carrying.
You also gain the [Ethereal Tendril](/3-Content/Compendiums/optional-features/ethereal-tendril-llvessel.md) Aspect. It does not count against your number of Unsealed Aspects and it cannot be replaced with another Unsealed Aspect.
If you already know Ethereal Tendril, you gain another Unsealed Aspect of your choice.
### Formless Magic (Level 3)
You learn certain spells at the Vessel levels noted in the table below. The spells don't count against your total number of Spells Known and cannot be switched upon gaining a level.
Your Iridescent Strikes can also deal acid damage.
| Vessel Level | Spells |
|--------------|--------|
| 2nd | [caustic brew](/3-Content/Compendiums/spells/tashas-caustic-brew-tce.md), [entangle](/3-Content/Compendiums/spells/entangle-xphb.md) |
| 5th | [hold person](/3-Content/Compendiums/spells/hold-person-xphb.md), [web](/3-Content/Compendiums/spells/web-xphb.md) |
| 9th | life transference, [slow](/3-Content/Compendiums/spells/slow-xphb.md) |
| 13th | [grasping vine](/3-Content/Compendiums/spells/grasping-vine-xphb.md), [vitriolic sphere](/3-Content/Compendiums/spells/vitriolic-sphere-xphb.md) |
| 17th | [contagion](/3-Content/Compendiums/spells/contagion-xphb.md), [hold monster](/3-Content/Compendiums/spells/hold-monster-xphb.md) |
^vessel-level-spells
### Formless Archon (Level 3)
You morph into a shapeless form of slime or an unspeakable flowing mass of opaque ooze. When you transform into your Archon Form you use the Formless Archon stat block below:
> [!embed-monster]- Formless Archon
> 
### Drain Vitality (Level 6)
While in Archon Form, you can use a bonus action to force any creatures under the effect of a Formless Magic spell or grappled by you to make a Constitution saving throw. On a failed save, they take 2d8 acid damage and your temporary hit points increase by half the total acid damage dealt. Your temporary hit points cannot exceed twice your level.
This acid damage increases at certain Vessel levels: at 9th (`3d8`), 13th (`4d8`), 17th (`5d8`), and 20th level (`6d8`).
### Consume Strike (Level 14)
Your Spirit hungers for the power of others. Whenever your Archon Form is hit by an attack, you can use your reaction to temporarily consume the memory of that attack.
The first Iridescent Strike you make before the end of your next turn morphs into a gelatinous mockery of the attack you consumed. On hit, it applies the damage and effects from the attack you consumed instead of a normal Iridescent Strike.
### Primordial Hunger (Level 18)
You and the Formless Spirit bound to you have become one hunger. Your Archon Form gains the following benefits:
- You assume the true appearance of your Formless Spirit.
- You gain immunity to acid damage, and whenever you deal acid damage, you ignore resistance to acid damage and you treat immunity to acid damage as resistance.
- As an action on your turn, you can make one Iridescent Strike with each one of your Archon's Pseudopods.