Energy Reading
At level 1 you gain observation attunement. When you roll for initiative, choose one combatant. You can determine what Haki Attunements they have and if they are a Devil Fruit user. If they have any, you may choose one Haki Attunement or their Devil Fruit power. You gain a +2 bonus to saving throws against Techniques, Attacks, or Features that utilize your choice.
Weakness Point
At level 3 your attunement for readings grows with tremendous potential. The first time you make an unarmed or weapon attack on your turn, you ignore the target's immunity and resistance to the attack and deal an extra die of damage. At level 11, this increases to two extra dice of damage. Additionally, you gain a +1 bonus to attack rolls against the target.
Haki Analysis
At level 6 when you hit an enemy combatant with your Weakness Point feature, you learn more about their Haki Network, and they gain a Haki Analysis marker, which resets upon entering or exiting initiative. You may spend Haki Analysis markers to do the following (once spent, they are removed from the combatant):
1 Token: You learn all Immunities, Resistances, and Vulnerabilities the target has.
1 Token: You and any allied creatures can ignore any status immunities the combatant has for 1d4+1 rounds. They are still affected by the status for its duration but cannot gain further ranks of it once this ends.
2 Tokens: Choose a damage type. If the target has resistance to the damage type, all allied creatures can treat any damage they deal of that type to the target as normal for 1d4+1 turns. If they have Immunity, it is treated as resisted damage for 1d4+1 turns instead.
3 Tokens: As a bonus action or reaction to the target being damaged, you may make it Vulnerable to that instance of damage and the next instance of damage within the same round.
Read Like a Book
At level 10 as a Bonus Action, you can attempt to glean information about the enemy's techniques. Ask the GM how many techniques the creature has, then roll a die equal to the number of Techniques. You learn the name and effects of the rolled technique. When that creature uses that Technique, if it requires a Saving Throw, you gain a +1d6 bonus against that Technique's Save. If it requires an attack roll, you gain +3 to your AC versus that Technique. Additionally, if the target of this Feature would use that Technique, you may use your Reaction to make a Weakness Point attack against it with advantage.
Insightful Combatant
At level 13, your heightened observation abilities allow you to predict and counteract enemy movements more effectively. You gain a +2 bonus to your AC and saving throws while you have at least one Haki Analysis marker remaining.
Additionally, you can extend your predictive abilities to allies. Once per long rest, you can grant an ally within 30 feet the ability to add your proficiency bonus to their AC or saving throws for 1 minute.
Ultimate Weakness
At level 17 you've discovered that every enemy has a major flaw if you look closely enough. Once per Long Rest, you may use your Haki Analysis markers on the following effects:
7 Tokens: The target loses all Immunities and Resistances for 3d4 rounds.
10 Tokens: Choose a damage type. The target becomes vulnerable to that damage for 2d4 rounds.
Master of Prediction
At level 20, you gain unparalleled insight into the future, allowing you to react with perfect timing. You gain a permanent Haki Analysis marker that does not count towards your maximum. This marker is always available to you, regardless of how many other Haki Analysis markers you have.
Additionally, once per long rest, you can declare that an enemy's attack will miss or your attack will hit without rolling. This decision must be made before the roll is made.