Bene's Bless

You bless an ally creatures within range, who failed an attack roll. The ally you blessed can add 1d6 to it's attack roll and your half proficency bonus to the damage. Further more you can choose to concentrate on the spell. In this case, you can use this spell's effect without expending a spell slot (You still have to use your reaction), four more times if you are still concentrating. The spell automatically ends if you exceed the one minute, or use up all blesses.

Using a Higher-Level Spell Slot. If you concentrate on the spell, you gain +1 use for each level above the 1st level of the spell slot you used to cast this spell.