As a Sword Burst Spell you create a momentary circle of the spectral blades which do sweep all around you. Also each and every creature within a range, but other than you, must be succeeded on a Dexterity saving throw or else it takes 1d6 force damage.
Did you read color spray 5e
At Higher Levels:
Actually, this spell damage normally increases by 1d6 as per this when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).
Attributes Of Sword Burst Spell 5E
|Casting Time||1 action|
|Classes||Sorcerer, Warlock, Wizard|