If the circumstances ever arise that a thrown scythe entity happens to have its owner field set to something other than a player entity, the game will crash due to a class cast exception.

Log:

Caused by: java.lang.ClassCastException: class ca.rttv.malum.entity.ScytheBoomerangEntity cannot be cast to class net.minecraft.class_1657 (ca.rttv.malum.entity.ScytheBoomerangEntity and net.minecraft.class_1657 are in unnamed module of loader net.fabricmc.loader.launch.knot.KnotClassLoader @1acaf3d)