Consume a Biscuit to restore 15% of your missing health and 15% of your missing mana over 15 seconds, as well as permanently increasing your maximum mana by 40. You will also gain the increased mana if you sell the biscuit for 30.
Manaless Champions restore 20% missing health instead. Can hold up to 4 biscuits at the same time.
Additional biscuits can be obtained with KleptomancyKleptomancy, which grants increased maximum mana only in conjunction with this rune.