Yeah rerolling magic items can be done indefinitely
You change the ilvl when rerolling rares
Cubing magic item with 3 perfect gems (any): iLvl = stays the same
Cubing rare item with 6 perfect skulls: iLvl = int(.4 * cLvl) + int(.4 * iLvl)
Cubing rare item with 1 perfect skull + soj: iLvl = int(.6 * cLvl) + int(.6 * iLvl)
Huh. Didn't know that. Thought the ilvl lowered on all items, not just rares (then again, diadems are the only items I've ever tried rerolling and a few Baal GCs). You learn something new everyday. Thanks, Sins. Guess I'm gonna start saving junk small charms from my TZ, I already pick up every flawless gem lol.