Vicious Knockery

Upon casting this spell, you cast Knock on every closed or locked object withing the giving range, regardless if you can see it or not. The same rules that affect a normal Knock spell still apply. 

Casting this spell with higher level spell slots adds 20 feet to the range of the spell and the sound created by the spell. For example if castes with a 6th level spell slot the range is increased to 60 feet and the sound created by the spell can be heard form 320 feet away.

"*knock knock knock* Goblins *Knock Knock Knock* Goblins *Knock Knock Knock* Goblins" - Sir Sheldon the wise