Casting Indirect Combat Spells on Oneself..., The fine art of suicide. Options

[Unarmed]

Question:

Can a mage cast indirect combat spells on themselves (i.e. fireball, ball lightning) with the intent of injuring other targets that would fall within the area effect of the spell? If the answer is yes, can said mage use his own counterspelling to attempt to avoid damage? Could a mage make this work even while blindfolded? (I.E, I close my eyes and can see my eyelids, which are part of me.)