The Archive of Esoteric Secrets
2-level Illusion
When you cast this spell, the spell it links to becomes secretive and subtle, any verbal components become barely audible whispers, and any somatic components are disguised as subtle hand movements. Any creature with a passive Perception score equal to or lower than your spell save DC does not notice your casting of the spell, preventing reactions such as counterspell. The creature still notices any visible effects that the spell possesses, such as the plume of fire from a burning hands spell, or the black eyes of an eyebite spell, etc.