Consciousness (Viññana)* is just like an illusion

"Now suppose that a magician or magician's apprentice were to display a magic trick at a major intersection, and a man with good eyesight were to see it, observe it, & appropriately examine it. To him — seeing it, observing it, & appropriately examining it — it would appear empty, void, without substance: for what substance would there be in a magic trick? In the same way, a monk sees, observes, & appropriately examines any consciousness that is past, future, or present; internal or external; blatant or subtle; common or sublime; far or near. To him — seeing it, observing it, & appropriately examining it — it would appear empty, void, without substance: for what substance would there be in consciousness?-Phena Sutta -Foam

*Viññana [vi~n~naa.na]:

Consciousness; cognizance; the act of taking note of sense data and ideas as they occur. There is also a type of consciousness that lies outside of thekhandhas — called consciousness without feature (viññanam anidassanam) — which is not related to the six senses at all. See khandha.