Excessive Swings of Luck

After you land an attack and deal damage, you can roll to attack again. However, the DC of the weapon you used becomes +0 (for existing DCs higher than 0). You can keep rolling for attack until you miss or fail the DC. Everytime you land an attack, your weapon still does damage.

Scaling at Higher Levels
At this spell's level of 2, 4, 6, and 8, the DC for the weapon you use increases by 1 when using this spell. Therefore, a level 2 spell will give a +1 DC to your weapon (if the 1st level version of this spell had +0 DC).