User blog comment:UsoppThePotato/An idea for critical strikes./@comment-11623843-20131003022542

There are such things as semi-random number generators for crits (I forgot the real name). They make it less of a chance to crit immidiatly after a crit, but after several non-crits in a row, the chance to crit would be very high. They make random less random. I believe league uses semi-random for crits already.