Dawn Strike

You flourish the weapon used in the casting and then vanish to strike like Dawn. Choose up to five creatures you can see within range. Make a melee spell attack against each target. On a hit, a target takes 6d10 fire damage. You add all bonuses from your weapon to each attack, this includes attack roll bonuses from enchantment level and any damage dice from the weapon itself. 

Additionally you can choose to target a single creature. Make three melee spell attacks against a target. On a hit,  a target takes  3d10 fire damage. You add all bonuses from your weapon to each attack, this includes attack roll bonuses from enchantment level and any damage dice from the weapon itself. 

You can then teleport to an unoccupied space you can see within 5 feet of one of the targets you hit or missed.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, you attack one additional creature or make one additional attack for each slot level above 6th