The "Shock Wave" enchantment

This enchantment would create a Shock Wave, similar to the one the Ravager creates, dealing damage and knockback in a determinated area, that could be set by the level of the enchantment. As a cons (I realy don't know a better word), the enchantment would trhow the player to the opposite direction of the atack, atacking from up woud trhow you up, in other situations just back.

Sorry for the errors, English isn't my first language, and it makes such a time I don't practice... Sorry if I've put it the wrong category, but I think it would be great to find it in another combat snapshot....