What do you do with your Life Cristals? I haven't spend a single one since the beginning of the game (380+ LC now), because there are nothing really appealing to me. The Skillblooms cost so much for a so little buff (few percents to activate a Skill), the same for the Ampys: they cost too much for a so tiny bonus. In fact I think that's the Level 100 Manyus who are the most interesting.
So what do you do? Do you know is something else will be added in the Shop later?