Fluidum Essentia is a type of arcane drug that comes explicitly from the warping of liquid distilled essence, as a bonus action, you can drink this liquid for powerful, though varying, effects depending on which type you use. There is one downside to this, and that is addiction, should you use this drug you must make a Constitution Saving Throw or become addicted, while addicted, you repeat this saving throw at the end of every day. While you are considered addicted, you must use this drug a number of times per day equal to your proficiency bonus, whether it's by choice of the player or the DM forces it. The DC for this saving throw is dependent on how many times you use this drug in a week, for every time you've used it, add 1 to the DC. At the end of the week, you halve the amount added to the DC (rounded down).
Each type of Fluidum Essentia has a different effect, they are as follows:
- Fotia - As part of the bonus action to consume this drug, you immediately use a breath weapon like that of a Red Dragonborn of an equivalent level, the DC for the Dexterity saving throw is your addiction DC.
- Fragor - For the next minute your voice booms like thunder, for the duration you have advantage on intimidation checks.
- Fulgur - As part of the bonus action to consume this drug, all creatures in a 5-foot-radius around you must make a Dexterity saving throw or take 2d8 lightning damage, the DC for the Dexterity saving throw is your addiction DC.
- Gelus - For the next minute everything you touch freezes, all melee attacks you make deal an additional 1d6 cold damage.
- Medeis - For the next minute magic flows through you, you can cast any two spells of 4th level or lower without spending a spell slot, but whenever you touch something magical, you take 1d6 force damage.
- Ostium - For the next minute your pores ooze with poison, any time someone makes physical contact with you they must make a Constitution saving throw or take 1d10 poison damage or half on a successful saving throw, the DC for the Constitution saving throw is your addiction DC.
- Oxino - As part of the bonus action to consume this drug, acid pours from your body like sweat filling a 5-foot-radius pool around you, all creatures who end their turn within the pool take 1d8 acid damage. After 1 minute the acid evaporates leaving a hole in the floor up to a foot deep depending on the material.