I'd strongly disagree with brilliant bauble and charm of life. These are favour items that, IMO, aren't even worth unlocking.
Charm of Life is a weaker version of blood of the fallen. The only edge it has is reduced death penalty. Of course, death penalty is usually around 20 seconds. Ten percent of that is two seconds. That's not even worth consideration, always take blood of the fallen and ignore the charm.
Brilliant Bauble similarly isn't worth your time. For the vast majority of the game, +10% extra experience won't even put you a single level ahead of the enemy. By the time 10% extra experience actually adds up to something useful, everyone will be close to level 20 anyways. In the long run, items that increase your mana supply (blade of serpent, anyone?) result in more experience by letting you stay in battle longer without having to return to a crystal.