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Mine: A+ is a powerful blood type because it is the second most common blood type. Since 36% of the population is A+ it is among the bloodtypes transfused most often. The most powerful part of A+ blood can be found in the platelets. Platelets can be donated as often as every seven days and up to 24 times a year.
I believe mine is AB+ or AB-, not entirely sure though, I'd have to confirm with my mom, as I'm the same type as her. It's whichever one is more rare, because she donates blood every time she can, for that reason. I can't though, I just about pass out at the sight of needles.