Thunder Strike

A blast of energy bursts from your fist. Make a melee spell attack against the target. On a hit, the target takes 1d10 force damage.

The spell allows more than one blast when you reach higher levels: two beams at 5th level, three beams at 11th level, and four beams at 17th level. You can direct the beams at the same target or at different ones. Make a separate attack roll for each beam.