Devil Fruits are mysterious fruits that grant the creature or thing that eats it supernatural powers upon being consumed. Once at least a single piece of the fruit enters the stomach of a creature, the fruit itself will revert back to being an ordinary mundane fruit and the creature or thing that consumed it will become quickly aware of the new powers they have acquired as the "Devil" originally inside the fruit enters their body. There are three types of Devil Fruits: Paramecia, Zoan, and Logia types.
Paramecia Devil Fruit users are usually the most common type and gain the power to either change their bodies, alter their environment, or produce a specific type of material. Zoan Fruit users gain the ability to transform into a type of creature. And Logia Fruit Users gain the ability to transform and control a natural element.
This all comes at the cost of never being able to swim again and becoming weak to water and seastone.
Devil Fruit Hunt!
To search for devil fruits, characters must declare a Devil Fruit hunt is taking place. Players must spend a week actively searching for Devil Fruits. At the end of this search, everyone must make a group check, using either Wisdom (Perception or Survival) or Intellgience (Investigation or Nature) to beat a DC determined by the island size. If more than half of the party succeeds, one Devil Fruit is located by the creature with the highest roll. Additional searches may be may be made if there are more Devil Fruits to be found on the island.
To engage in a Devil Fruit Hunt on an island you must spend 7 DT which will also lower the amount of DT activities you can partake in a week by 1. You only get a single roll and must return to the island should you leave it for any reason.
Devil Fruit Spells levels unlock at certain levels
Character Levels
2 First and Second Level spells
4 Third Level spells
6 Fourth Level spells
8 Fifth Level Spells
10 Sixth Level Spells
12 Seventh Level Spells
14 Eighth Level Spells
16 Ninth Level Spells
Some Devil fruits come with spells, to ensure the server is balanced, spells granted by Devil Fruits will follow these rules. Unlike regular spellcasting, Devil fruits will unlock higher level spells one level sooner.
Devil Fruit Encyclopedia
These books are among some of the rarest items in the world, with only a few ever being printed. Devil Fruit Encyclopedias can be used to automatically identify most types of Devil Fruit and give basic information on its appearance and powers. When observing a Devil Fruit with this book, you or the DM may view the official Devil Fruit Encyclopedia to identify its name and properties without needing to consume it.
Different Methods...
With certain connections, you may be able to find rather sketchy individuals who have methods to identify Devil Fruits, though this might not be as reliable as using a Devil Fruit Encyclopedia the risk is yours to take if need be.
Custom Devil Fruits
Most Devil Fruits are completed and are ready to be used when eaten while others need to be balanced to fit the current level of the characters. In particular, Zoan fruits are set up to allow players to customize their fruits by following the guidelines and rules provided. Other fruits such as Logias and Paramecias may have the need to be customize or you may want to create your very own special fruit to add to our loot tables. Check out designing-a-devil-fruit logia zoan paramecia to see the guidelines in doing so!
Weaknesses
Devil fruit users are doomed to "become a hammer" for the rest of their lives, meaning they cannot swim. If their powers are particularly useful, that might be an acceptable tradeoff for many. Additionally, you can never eat another devil fruit or you will die.
Upon gaining devil fruit powers, you are permanently weak to sea water, sea stone, and similar bodies of liquid. This can make a seafaring adventure fairly difficult, even if your devil fruit power is particularly strong. Marines and other powerful pirates may also have access to various seastone weapons that will immediately weaken you and nullify your powers. Being a strong devil fruit user can often make its user feel like they have become gods, giving them a great advantage over most foes. However, it can be considered a great burden over time, and requires great care and caution to avoid drowning or being captured because of the weaknesses that come with it.
Universal Weakness: Becoming a Hammer
When you gain the powers of a devil fruit, your swimming speed becomes 0 forever. Additionally, if you are more than half submerged in any body of water or similar liquid, you become incapacitated until you are no longer submerged. While incapacitated this way, you cannot use any devil fruit features and any devil fruit abilities you have activated will end. If you become fully submerged, you begin to sink and you may hold your breath for a number of minutes equal to 1 + Constitution Modifier (minimum 30 seconds) before you drown. Once you begin drowning, you drop to 0 HP, and you can survive a number of rounds equal to your Constitution Modifier (minimum 1). Only when you are able to breathe again will you become stabilized.
The speed at which you sink depends on how much armor you are wearing. If you unarmored or wearing light armor, you sink at a rate of 5ft/round. If you are wearing medium armor, you sink at a rate of 10ft/round. And if you are wearing heavy armor, you sink at a rate of 15ft/round.
Universal Weakness: One Devil Per Body
When a devil fruit enters your body, you will never be able to eat another devil fruit for the rest of your life. Some may not be aware of this fact, and will be doomed to meet a horrible fate when trying to do so. If a character eats more than one devil fruit, they immediately drop to 0 HP and explode, dying instantaneously. If they are somehow brought back to life by a specific spell or ability, such as wish or true resurrection, they will no longer have devil fruit powers.
Universal Weakness: Seastone
Seastone, similar to sea water, can completely incapacitate any devil fruit user that comes into contact with it. If a devil fruit user ever comes into direct contact with seastone, they must succeed on a DC 20 Constitution Save, or become incapacitated until the start of their next turn or so long as they are in contact with the seastone. This save must be repeated at the start of each turn so long as the creature is in contact with seastone. While in contact with seastone, you cannot use any devil fruit features and any devil fruit abilities you have activated will end.
Optional Weakness: Fruit Vulnerability
A devil fruit may come with a vulnerability or weakness depending on the nature of its power. More powerful devil fruits, such as legendary devil fruits, might not have any exploitable weakness aside from sea water and seastone. However, less powerful devil fruits may have explotable weaknesses. For example, a devil fruit that allows its user to create a flammable material will be vulnerable to fire and will begin to burn each round when catching on fire. Or a logia devil fruit power that makes its user into lightning might be immune to non-magical physical damage except for attacks made from insulating materials such as rubber.
Devil Fruit Attack Bonus and Save DC
Constitution is your spellcasting ability for your Devil Fruit spells, since the strength of your fruit is determined by your internal strength. You use your Constitution whenever a Devil Fruit spell refers to your spellcasting ability. In addition, you use your Constitution modifier when setting the saving throw DC for a Devil Fruit spell you cast and when making an attack roll with one.
Devil Fruit save DC = 8 + your proficiency bonus + your Constitution modifier
Devil Fruit attack modifier = your proficiency bonus + your Constitution modifier