Blood Bat

You trace a glimmering pyramidal sigil in the air (either with your hands, a wand, or a staff), summoning a strangely proportioned bat in an unoccupied space you can see within 15 feet of you. When the bat appears, you choose a direction for it to face. Flip a coin; If Heads, the blood bat flies directly 15 feet in a straight line and makes a melee spell attack against the first creature it encounters in that line, dealing 1d10+1 force damage on a hit. If Tails, the blood bat flies around a target within 15 feet dealing 1d6+1 radiant damage directly to the target. The blood bat dissipates immediately after the attack. The blood bat is a magical effect and not a creature.