New player here. This is a great game, but I've limited myself to the single-player campaign so far, for a few reasons (one of which is that I have four kids and am constantly having to jump up and deal with one crisis or another). I have one question. I've been finding cool items that seem to require one or more YELLOW "power dots" to equip, other than the blue ones I've been getting as my characters level up (they are about level 12 now). Am I missing something about how to be able to use these items? How do I get yellow power dots for my characters? Do they just come naturally with higher levels, or do I have to pay for them?