Greater Arcane Lock

4th level abjuration

Casting Time 1 action

Range Touch

Components V, S, M (gold dust worth at least 50 gp. which the spell consumes)

Duration Until dispelled

As arcane lock except for the following. A greater arcane lock is unaffected by the knock spell. Greater arcane lock can be cast using any spell slot of the 4th level or higher, affecting the difficulty a creature would have to successfully remove it with dispel magic.