Veil Sanguinus

For the duration, a willing creature who is targeted by this spell has their essence hidden. If cast without material components, the creature can't be targeted by any divination magic or perceived through magical scrying sensors. In addition, the target would be treated as a humanoid for spells and effects, such as the spell Detect Evil and Good, the spell Magic Circle, or a paladin's Divine Sense feature. 

When cast with the optional material component, the creature who is targeted by this spell instead has their essence disguised as the creature whose blood was used as the material component. The creature who is targeted by this spell can't be targeted by any divination magic. Divination magic that would target the creature who the target's essence is disguised as will affect whichever creature is closest to the one casting the divination magic. When viewed through a magical scrying sensor, the target of this spell will instead appear as the creature who the target's essence is disguised as. In addition, the target would be treated as the creature type of the creature whose blood was used as a material component for this spell. 

Bloodletting. When you cast this spell you can choose to expend a number of hit dice equal to the spell level at which it is cast. If one or more hit die are expended this way, you can treat this spell as though it were cast with the optional material component without expending a material component. When you do so, you must disguise your essence as a creature whose blood you have previously used as a material component for this spell.