Dungeons & Dragons 5e Element 133 Class Feature: Perceptive Action

You gain the initiative to react to changes in knowledge quickly. Whenever you pass a Perception or Investigation check in the middle of a surprise round, during the Initiative of a fight or chase, or right before (Or as) a trap goes off (Working only if the trap is what the Perception or Investigation check discovered), you may use your reaction to take the Dash, Disengage or Hide action, or to interact with an object that doesn't cause an attack roll or saving throw to another creature. If you dash with this action, you can take one willing creature you can pull with you, though this halves your speed. If you dash from a trap this way, you (And anyone you pull) don't have to save against the trap if you escape the area it affects.