Arcane Echoes

You create illusory echoes of arcane energy that dance and shimmer around a creature of your choice within range. The target must make a Wisdom saving throw. On a failed save, it becomes surrounded by illusory echoes, causing it to have disadvantage on Wisdom (Perception) checks and making it the target of opportunity attacks from creatures that can see it, even if they are not within reach.

Additionally, whenever the affected creature deals damage with a spell or magical effect, the illusory echoes flare and duplicate the spell's effect, creating a secondary illusion of the spell's visual effects and a faint mimicry of its power. This secondary illusion appears to occur in a space adjacent to the original target and lasts until the start of your next turn. The illusionary duplicate does not cause any additional damage or effects, but it can distract foes or mislead them momentarily.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the duration increases by 1 minute for each slot level above 3rd.