The Assessors of the Great Academy were an order of explorers and naturalists sent to survey all the lands of the world and gather all the information they could about the peoples, places, history, and legends of every place they visited.  Although the location of the Academy and fate of their original order of Assessors is forgotten in these days, there are those that would follow in the footsteps of the Assessors, who believe in the mission they once espoused.

Cultural Ambassador

Assessors were charged to enter various cultures and move amongst them, without causing disruption.  

At level 3, you learn one additional language.

At level 3, gain proficiency in Persuasion or Deception, (or another skill of your choice if you already have both.)

Assessor's Toolkit

The following Spells were useful to and trained by those following in the footsteps or the tradition of the Order of Assessors.

These Assessor bonus spells become available whenever the Ranger gains access to spells of the appropriate level.

These spells are always prepared, and do not count against the number of spells the Ranger may prepare.

1st - Identify (Available at Level 3)

2nd - Locate Animals or Plants (Available at Level 5)

3rd - Sending (Available at Level 9)

4th - Arcane Eye (Available at Level 13)

5th - Antilife Shell (Available at Level 17)

Threat Assessment

At level 3, the Assessor gains the ability to, as a bonus action, Assess a target within 30 feet from you or an object or creature from which you are remotely receiving visual information, such as Arcane Eye.  Whenever you Assess a target, you identify the vulnerabilities of the creature, and the maximum damage it can deal with any particular weapon or natural weapon attack.  Additionally, after using this ability to examine a creature, add 1d4 damage to each weapon attack you make against that creature for the next hour or until you use this ability against a different creature.

 

Threat Level Alpha

The original mission of the Assessors was to identify threats.  Alpha class threats are those that unchecked pose a serious danger for humanity, or even for human extinction. Creatures like werewolves, drow, elementals, or vampires are among those that pose this sort of threat, although an Assessor may designate any enemy they choose with the following feature.

When your Assessor reaches level 7, you gain the ability to, up to your proficiency bonus number of times per day, when you Assess an enemy, you may designate it Threat Level Alpha as part of the same Bonus Action.  If you do, whenever you hit that creature with an attack you may choose either: deal 2d4 damage against that creature, gain resistance to the next time it damages you before your next turn, or gain advantage the next time it would force you to make a saving throw before your next turn.  You may not choose the same option more than once during a turn.

Academy Report

Assessors of the past would file their findings with the Academy, to further the basis of human knowledge.  You can at least share them with your allies.

When the Assessor reaches level 11, they gain the following feature:

Whenever you Assess a new creature, before your next Long Rest you may write a log entry about that creature and create an Assessment Report. 

When you encounter another creature of the same kind as a creature that you have previously created an Assessment Report about, you gain the benefits of Threat Assessment against it automatically.  (If it uses the same stat block as an Assessed Creature, it is the same kind of creature for the purposes of this feature.  If it uses a different stat block, it is not the same creature.)

Once per long rest, you may spend 1 minute reading and explaining any of your Assessment Reports to up to twice your proficiency bonus in allies, each of whom adds 1d4 to their weapon or cantrip damage for the next hour against a creature of the same kind as the creature the Assessment Report described.

Threat Level Omega

Originally, the Assessment system ended at Threat Level Alpha.  Few know about the highly classified Threat Level Omega entities. A Threat Level Omega entity is an individual creature of immense power, such as a Dragon, an Archlich, a Fiendish extraplanar being, a giant dinosaur, or a monster from the Far Realm beyond the stars.

At Level 15, Assessors gain their ultimate feature. Once per Long Rest, when you Assess a creature, you may also designate it to be Threat Level Omega (you also gain all the benefits of having Designated it Threat Level Alpha and using Threat Assessment on it).  You gain 1 Legendary action per round you may use immediately after the designated creature takes a Legendary or Mythic Action, or causes a Critical to a creature you can see.  This action may be used to Attack the designated creature (once only, ignoring the Extra Attack feature), or to perform any other Action except Casting a Spell.

The Assessor also gains Advantage on their first attack each round against each target they have Assessed.