Arcane Revelation

You burst with revealing light, creating Bright Light in a 20-foot Emanation for the duration. When you cast the spell, each creature of your choice in the Emanation must succeed on a Constitution saving throw or have the Blinded condition until the end of its next turn.

For the spell's duration, you and creatures of your choice in the Emanation have Advantage on saving throws against spells and other magical effects. An affected creature can’t be targeted by Illusion spells unless it is willing and automatically succeeds on any ability check it makes to discern an illusion.