Cutting Dive is a skill located in the Animal Companions (which can be found in the Warden skill tree). Cutting Dive is a morph of Dive.
Cutting Dive deals the following types of damage: Physical Damage. Which means that it gets buffed by the following blue champion point trees: Master at Arms, Mighty, Piercing, Precise Strikes. Also the following red champion point trees protect against this skill: Hardy, Iron Clad.