You send forth an accurate homing missile, which upon contacting the target, expands to a large sphere before imploding, knocking creatures down.

This missile can turn around corners up to a maximum angle of 135° on its journey. Furthermore, the target of this spell does not need to be within your line of sight. However, you need to have seen the target within the past minute.

If the target of this spell is a creature, it makes the saving throw with Disadvantage if it's within range and the missile is able to reach it, whereupon the missile detonates. The missile also detonates if it reaches the end of its range but does not find the target.

All other creatures within an 8m radius Sphere from the detonation point must make a Dexterity saving throw, taking 6d6 Arcane damage and are potentially knocked

Prone

Critical Success (+10). The target is unaffected.
Success. The target takes half damage.
Failure. The target takes full damage and is knocked Prone.
Critical Failure (–10). As failure, except the target takes 1.5× damage.

At Higher Levels: Increase the damage by 1d6 for each spell level increase.