Rage
Once per encounter, activate Rage while declaring your action, without spending that action. It lasts through three of your turns, including activation. Each Strength-based melee hit deals +2 damage. Gain temporary HP equal to your level plus your positive Constitution modifier. Rage ends early if you fall unconscious or combat ends; its remaining temporary HP then expires. You retain control of targets, movement, and retreat. Rage itself changes neither accuracy nor AC.
Thick Hide · level 4
Reduce the physical damage of each weapon or natural-weapon hit by 1, to a minimum of 1 if the hit would cause positive physical damage. A hit already reduced to zero stays at zero. Separate poison, elemental, and other effects are unchanged. This works outside Rage, but not against spells or breath attacks.
Cleave · level 5
Once per encounter, after a melee kill, immediately make one melee attack against a different enemy in the same area. This attack cannot trigger another Cleave.