Blink Strikes

Available to Bard, Magus, Paladin, Ranger, Sorcerer, Warlock, Wizard

3rd-level transmutation As you begin the motions of a weapon attack, you flicker out of existence and reappear with a with a gust of wind. You teleport in a 30 foot line. You may make up to three melee attacks against up to three creatures within your reach from that line with advantage.
 * Casting Time:  1 action
 * Range:  Self
 * Components:  V, M (a held weapon)
 * Duration:  Instantaneous

At higher levels. When you cast this spell using a spell slot of 4th level or higher, you may teleport an additional 10 feet and make an additional melee attack against up to one additional creature for each spell slot above 3rd

(So you can attack one creature twice, and another creature once by default at any point during your teleport)