Lamia's Feast

You can feast like Lamia before you. You gain the following benefits:
• Increase your Intelligence, Wisdom, or Charisma score by 1, to a maximum of 20.
• You can use an action to engage in a feast worthy of the original queen Lamia, devouring the blood and flesh of all who stand before you. Each non-construct, non-undead creature in a 30 foot cone takes 8d8 necrotic damage, or half as much damage with a successful Constitution saving throw against a DC equal to 8 + your proficiency bonus + your Intelligence, Wisdom, or Charisma modifier (choose the ability when you select this feat). You then gain temporary hit points equal to half the damage a single creature took from the effect; calculate these temporary hit points using the creature that took the most damage. If Lamia’s Feast deals damage to a living sapient creature, you become satisfied