Base Class: Wizard
This is an implementation of the Mimicry subclass from Tasha's Crucible of Everything Else
The mimic. A devious hunter, every rogue's nightmare, and the last thing some creatures see before being swallowed whole. The first mimics were created by powerful mages, and they were intelligent creatures, combining tactical prowess with an all-consuming hunger to create terrifying and powerful devourers. While the secrets of how to create those beings have been lost to time, some mages have passed down a similar tradition that allows even novice wizards to create the monstrosities that many dungeon delvers have become familiar with, commanding these monstrosities as subordinates through sheer power of will.
Transmogrify
As an action, you can spend a spell slot and touch a nonmagical object that isn't being worn or carried to turn it into an experimental mimic of the same size. This mimic uses the arcane mimic stat block (included below). Some details of this stat block vary based on the spell slot used to create the mimic and the size of the mimic, as described in the Transmogrification and Arcane Mimics tables.
The spell slot used determines the mimic's Strength score and the maximum size of item you can transmogrify, according to the Transmogrification table. The mimic's size determines its hit points and the bludgeoning or piercing damage dealt by its attacks, according to the Arcane Mimics table.
The change lasts for 1 hour, until the mimic is reduced to 0 hit points, or until you dismiss the effect as an action. You can only have one mimic created in this way at a time. You can communicate with your mimic telepathically as long as it is within 120 feet of you.
In combat, the mimic takes its turn immediately after yours. It obeys your verbal or telepathic commands (no action required by you). If you don't issue any, it moves toward the nearest hostile creature and bites it if possible.
Transmogrification
| Spell Slot Used | Maximum Size | Strength |
|---|---|---|
| 1st | Tiny | 12 (+1) |
| 2nd | Small | 14 (+2) |
| 3rd | Medium | 16 (+3) |
| 4th | Medium | 18 (+4) |
| 5th | Large | 20 (+5) |
| 6th | Large | 22 (+6) |
| 7th | Huge | 24 (+7) |
| 8th | Huge | 26 (+8) |
| 9th | Gargantuan | 28 (+9) |
Arcane Mimics
| Mimic Size | Hit Points | Attack Damage |
|---|---|---|
| Tiny | 4 × the level of the spell slot used | 1d4 + the mimic's Strength modifier |
| Small | 6 × the level of the spell slot used | 1d6 + the mimic's Strength modifier |
| Medium | 8 × the level of the spell slot used | 1d8 + the mimic's Strength modifier |
| Large | 10 × the level of the spell slot used | 2d8 + the mimic's Strength modifier |
| Huge | 12 × the level of the spell slot used | 3d8 + the mimic's Strength modifier |
| Gargantuan | 20 × the level of the spell slot used | 4d8 + the mimic's Strength modifier |
Arcane Mimic
Varying size Monstrosity (shapechanger), neutral
Armor Class your spell save DC
Hit Points varies*
Speed 15 ft.
Damage Immunities acid
Condition Immunities prone
Skills Stealth 1 + twice PB
Senses darkvision 60 ft., passive Perception 11
Languages understands the languages of its creator but can't speak
Challenge — Proficiency Bonus equals your bonus
Shapechanger. The mimic can use its action to polymorph into an object its size or back into its true, amorphous form. Its statistics are the same in each form. Any equipment it is wearing or carrying isn't transformed. It reverts to its true form if it dies.
Adhesive (Object Form Only). The mimic adheres to anything that touches it. A creature up to one size larger than the mimic adhered to the mimic is also grappled by it (escape DC equal to your spell save DC). Ability checks made to escape this grapple have disadvantage.
False Appearance (Object Form Only). While the mimic remains motionless, it is indistinguishable from an ordinary object.
Grappler. The mimic has advantage on attack rolls against any creature grappled by it.
Spider Climb. The mimic can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.
Actions
Bite. Melee Weapon Attack: your spellcasting attack modifier to hit, reach 5 ft., one target. Hit: varying* piercing damage plus acid damage equal to a number of d4s equal to the level of the spell slot used.
Pseudopod. Melee Weapon Attack: your spellcasting attack modifier to hit, reach 10 ft., one target. Hit: varying* bludgeoning damage. If the mimic is in object form, the target is subjected to its Adhesive trait.
* see the Arcane Mimics and Transmogrification tables
Spittle Savant
Once you spend enough time in mimic slobber, you just kind of get used to it. You gain resistance to acid damage.
Additionally, you can have up to two arcane mimics created at a time. As a bonus action, you can expend a spell slot to magically heal one of your arcane mimics within 120 feet of you. The arcane mimic heals for a number of d8s equal to the level of the spell slot expended.
Polymorph Proficiency
Your knowledge of how to change creatures into mundane objects and the basic natural forms of animals is cemented in your mind. You add the polymorph spell to your spellbook if you don't already have it, and you always have it prepared. This does not count against the number of spells you can prepare at once.
When you cast polymorph, you can transform the target creature into an object instead of a beast. This object counts as magical and must be no more than one size larger than the creature. Any attempt to undo the existence of the item without reducing its hit points, such as by the disintegration spell or by using it as a consumed material component for a spell, makes the effect fail and immediately ends the polymorph effect, as if the creature-object had been reduced to 0 hit points.
You can also target a nonmagical object with this spell to turn it into another object or into a beast of the same size with a challenge rating equal to or less than the level of the spell slot used.
Mimic Mastery
You can have up to three arcane mimics created at a time, and can communicate with them telepathically or magically heal them using your Spittle Savant feature at any distance, even on different planes of existence.
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