Blood transfusion

Select a willing creature and replace a portion of its blood, curing or causing ailments dependent on the blood used as the material component. If the creature is not willing it must succeed in a Constitution DC equal to your spell casting modifier.

Using normal blood will cure the status ailment of poisoned.

Using poisoned blood will inflict the poisoned condition.

If either is used your material component is changed to the other.

This spell can also be cast as a ritual spell with a duration of 10 minutes.