Bikalyn's Rage

At the first blood of battle (death), Bikalyn feels a hidden rage inside of him come out. 

He has to make a perception check. If he fails, roll a 1d4, and he loses his senses for that amount of time. 

He gains a 1d6 temp. HP, lvl 5 (2d6), lvl 9 (3d6)...so on every 4 lvls. 

He attacks the nearest creature next to him, friend or foe until they are unconscious.