Some prey are too vast to fell in a single blow. You've learned to open the wound, and let the beast bleed itself into the grave.
Level 3
Finishing Blow.
(1 Action, Half Range) Attack your Quarry, consuming all its Rend stacks: deal +2 damage per stack consumed (ignoring armor).
Heavy Ordinance.
When you crit your Quarry with a ranged weapon attack, push it back 1 space per size category above Medium (Large: 1, Huge: 2, Gargantuan: 3).
Rend.
Whenever you hit your Quarry with a ranged weapon attack, it gains 1 stack of Rend, up to once per turn (max stacks: Medium 3, Large 4, Huge 5, Gargantuan 6).
Level 7
Weak Point.
When you crit your Quarry with a ranged attack, it gains 1 additional stack of Rend, ignoring the once-per-turn limit.
Level 11
Relentless Hunter.
When you use Finishing Blow, you only consume half the Rend stacks (round down) instead of all of them.
Level 15
Titan’s Bane.
(1/encounter) When you use Finishing Blow against a Bloodied Quarry, it's a guaranteed critical hit.