As Shammoz has already said XP boosts are perfectly fine, so XP potions, recruit a friend bonus XP (But NOT the granted levels) and even the monk enlightenment are all good for Heritage armor.
As Shammoz has already said XP boosts are perfectly fine, so XP potions, recruit a friend bonus XP (But NOT the granted levels) and even the monk enlightenment are all good for Heritage armor.