When you feed on a dead body, you process its power to fuel your magic.
Benefit(s): Once per day as you feed on the body of a spellcasting humanoid, you can absorb some of the lingering power in the body to enhance your own spellcasting ability. If the body you feast upon is less than 100 years old, you may immediately recall to memory any one spell you previously cast within the last 12 hours, or regain a spell slot you used within the last 12 hours. If the body you feast upon is over 100 years old, you immediately recall two spells to memory or recover two used spell slots instead.
Sandy Petersen’s Cthulhu Mythos, © 2017, Petersen Games; Authors: Sandy Petersen, Arthur Petersen, Ian Starcher.