Thunderous Blast(revised)

The first time you hit a target with a ranged weapon attack during this spell’s duration, the projectile bursts into a loud thunder on contact that is audible within 300 feet of the target, and the attack deals an extra 2d4 thunder damage to the target. Additionally, if the target is a creature, it must succeed on a Strength saving throw or be pushed 10 feet away from you and knocked prone.

 At Higher Levels. When you cast this spell using a spell slot of 2nd Level or higher, the extra damage increases by 1d4 for each slot level above 1st.