I could be wrong, but IIRC 5 PB = +1 level at 200 IQ, so a 30 PB donation from a single player should give you +6 levels. It doesn't matter whether you're donating to 1, 2, or 3 PBs in a combo; all that matters is the total PB being donated (anywhere from 10 to 90 PB, depending on the number of...