When taking this feat you gain an additional way to enhance and cast magic.
When casting a 1st level or higher spell you can choose to sacrifice hit dice to increase the casting level of the spell by one per 2 hit dice spent. However, increasing the spell in this way cannot exceed your maximum level spell slot. Spent hit dice are rolled and necrotic damage is taken by the caster equal to the total which cannot be negated or reduced by resistance, immunity, or any other source.
Additionally, once a day you can choose to cast a spell of 1st level or higher without using a spell slot if you spend 2 hit dice per spell level. You may use this feature again after a long rest.
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