These Ploys are masterful acts of subterfuge and skill, and can only be learned by Blackguards of 9th level or higher. Each of these Ploys can only be used once per short or long rest.

Prerequisites: 9th level, proficiency with poisoner's kit
As an action on your turn, you can expend Ploy Dice (up to your proficiency bonus) and use a poisoner's kit to craft a vial of Greater Poison, which retains its potency until the end of your next long rest.

Prerequisite: 9th level, Intelligence or Wisdom of 15
You can expend a Ploy Die to spend 10 minutes focused on a person, object, or location you can see, after which, you remember a piece of lore about the thing you focused on.

Prerequisite: 9th level, Charisma or Intelligence of 15
You can expend a Ploy Die and spend 1 hour to recruit a humanoid Informant from a settlement you currently occupy.

Prerequisite: 9th level, Dexterity or Charisma of 15
You can expend a Ploy Die and spend 1-hour gathering information on up to 1 square mile of a settlement that you currently occupy.

Exploits of the 5th-degree are devious feats that rival deeds of the most cunning tricksters and archfey. These Ploys can only be learned by Blackguards of 17th level or higher, and each 5th-degree Ploy you know can be used once per long rest.

Prerequisites: 17th level, proficiency with poisoner's kit
As an action, you can expend Ploy Dice (up to your proficiency bonus) and use a poisoner's kit to craft a vial of Masterwork Poison.

Prerequisites: 17th level, Dexterity of 19
When you take damage, you can use your reaction to expend one Ploy Die and move with supernatural agility and speed to an unoccupied space within 10 feet.

Prerequisites: 17th level
When you hit a creature with a melee weapon attack, you can expend an Exploit Die to strike with supernatural accuracy at its most vulnerable point. It must succeed on a Constitution saving throw or it is considered vulnerable to the damage of this attack. Regardless if the creature succeeds or fails on this saving throw, it takes additional damage of your weapon's type equal to four rolls of your Exploit Die. Finally, if the damage of this attack reduces the creature to 50 hit points or fewer, it falls prone and is stunned until the beginning of its next turn. A creature can use a Legendary Resistance to avoid this effect.