Sign of Eibon

3rd-level evocation

Casting Time: 1 action

Range: Self

Components: V, S

Duration: Concentration, up to 1 minute

You draw a sign in the air that enhances your magical power. Each spell you finish casting while maintaining concentration on this spell takes effect as if you had cast it with a spell slot one slot level higher than you actually expended for that spell. If you cease concentration on this spell as a result of casting a new spell, its effects are not enhanced and Sign of Eibon ends. Spells enhanced in this way cannot benefit from any other effect that alters their effective slot level.