Low Health Mode

A gem attached to you activates when you fall below 30 hp. When the gem is activated for the first time on your turn, and for the next minute, you gain temporary hit points equal to your cleric level, a +1 bonus to hit and damage with your arm blade and the ability to cast spells without needing the somatic component. The to hit and damage bonuses go up by 1 each time you would gain a feat or ability score improvement.