In this Blur 5E your body do become blurred, shifting and even wavering to all those who can able to see you. For the duration, any of the creature which has disadvantage on the attack rolls against you. Basically, an attacker is immune to this effect if it does not rely on sight, as with blindsight, or else can see through illusions, like with truesight.
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Attributes Of DnD 5E Blur
|Casting Time||1 action|
|Duration||Up to 1 minute|