Attribute improvement: This ability sets your INT score to a minimum of -2.
You move on a distance up to your movement speed on the ground. If you have a fly speed or swim speed then you may move in the air or in water accordingly. This movement doesn't trigger reactive abilities.
Feat save improvement: This ability gives fluency in MOV feat saves.
You become hidden. As you do this, you may roll 1d20 + SNK. If this is greater than your passive sneak (10 + SNK), then you use it as your hidden DC. If not, use your passive sneak.
When you are hidden, you cannot be seen. This condition is always associated with some hidden DC it takes to see you. Unless otherwise noted, it's your passive sneak (10 + SNK). Other creatures will only be able to see you (or know that you're there) if they use some relevant ability that lets them do so, if their passive perception (10 + PER) is greater than your hidden DC, or if enabled to by some other effect. In most cases, a creature trying to see you will have some check which must pass your hidden DC.
While hidden, if someone knows where you are but is unable to see you, any attacks they make against you are done with disadvantage. Similarly, any attacks you make against someone that can't see you are done with advantage. Attacking causes you to no longer be hidden.
While hidden, you must not Move faster than your hidden speed. Any other movement effects require a DC 15 SNK feat save to remain hidden.
If proficient: Instead roll 1d20 + SNK + P for your hidden DC (if it's greater than your passive sneak). If fluent: Instead roll 1d20 + SNK + F for your hidden DC (if it's greater than your passive sneak). Attribute improvement: This ability sets your SNK score to a minimum of 2. Feat save improvement: This ability gives proficiency in SNK feat saves.
You vertically leap at quarter speed and horizontally leap at half speed.
If proficient: You instead vertically leap at half speed and horizontally leap at full speed.
You cannot use items in your hands.
Attribute improvement: This ability sets your MOV score to a minimum of 0.
Attribute improvement: This ability sets your PER score to a minimum of 0.
Attribute improvement: This ability sets your SNK score to a minimum of 0.
Attribute improvement: This ability sets your STR score to a minimum of -2.
You have Swimming and Diving but have no walk speed.
You swim at full speed.
You no longer have to stay on the surface of water while Swimming.
You challenge the target to advance and fight you. They may immediately Move towards you as a free reaction to this and begin dueling with you. If they choose not to or are unable to do so, then they are considered to have "forfeited" the duel (but are not considered to have "lost" it) and become lighted to you until the end of your next turn.
Creatures that are dueling each other are spiritually linked to each other in a state that's slightly out of phase with everyone else. This doesn't have any inherent mechanical effects in and of itself, but it implies a structure for how those creatures interact with each other and the world around them that may be interacted with by duel modifying effects or other abilities. The term "in a duel" is often used to refer to a creature that is dueling. This does not mean that the "duel" must have been started by Duel.
If a creature that is dueling becomes incapacitated then they are considered to have "lost" the duel. If a dueling creature incapacitates themselves, they are considered to have "forfeited" the duel which in turn also makes them count as "losing". If a dueling creature attacks a creature that they are not dueling, that is also considered to be "forfeiting". If a creature is ever the only one remaining in a given duel, the duel ends and they are considered to have "won" the duel.
Duels typically have a "range" of 30 feet. This means that if any creature that is dueling Moves more than 30 feet away from any other creature that they are dueling with, they are considered to have "forfeited" the duel.
The dueling state is not visible in the Material Realm, but there is a very slight tether that can be seen in the Ethereal Realm. There are no restrictions on what realm a duel can take place in, but all participants must be within the same realm. Any participant that leaves that realm is considered to have gone out of range and therefore "lost the duel".
If proficient: You may also make Move or make a single action Duelist ability as a free reaction to the target's decision and subsequent movement.
You swim at full speed.