Remnants of knowledge allow riftwalkers access to remnant worlds (which I'm
sure you already know, just want to be clear what I'm talking about here). If
you manage to defeat a boss inside one of these worlds, all riftwalkers who
appear on the tablet in the shaman cave, will receive a bonus to ALL their
entities power (rep). The amount of bonus depends on how many remnants you
have handed in. Watch out for bugs