Scout

Alacrity: So long as they did not make an attack in their previous turn, the scout moves exceptionally fast and will always outrun people chasing them. They run roughly four times the full movement speed of your average man.

Vulnerability: Scouts make out vulnerabilities by scoping a target out for one round. Scoping a target out leaves them vulnerable, causing the next attack applied against them to have advantage.

Level 1:

Vanish!: The Scout may dash back so fast that they wind up literally disappearing before the target's very eyes.

Level 2:

Two steps ahead!: If the Scout spots out a vulnerability in a target, they may dash to their position and make a disarm attempt, interrupting spells or attacks.

Level 3:

One step back: The scout may tumble and make a great leap backwards, diving back behind the safety of an ally of their choosing. They may use this as a reaction to avoid an attack, magical or otherwise.