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.

The target of the spell automatically critically fails the Dexterity saving throw if it's within range and the missile is able to reach it.

All other creatures within a 6m radius Sphere from the target must make a Dexterity saving throw, taking 5d10 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 1d10 for each spell level increase.