Level Loss that is not Energy Drain

[saltythetrain]

what?

I assume you're talking about level loss due to spells/crafting xp costs. It's true. You may not cast a spell or craft an item whose xp cost would bump you down a level. It's a nice preventative rule to keep people from going nuts with wish or crafting some epic item and going back to level 5. I ran into this rule when I wanted to make a Ring of Infinite Wishes.