I just got the new sun spells, thinking it will be a waste of training points. But what the hey, i got points to spare. Then i find out that its stackable. Yup, is you have a regular balance blade and put "sharpened blade" in it it will stack with another regular balance blade. That's another blade for you. It does the same with traps too. now you can feint twice with out using tc or pet skills. this will surely help players with low attacks/or has less blades like life and balance. hope this helps.