Fortunately, you can enjoy these fun things in Hollow Knight while you wait ... through the floor and get to this charm, which means Soul Master must be defeated in the Soul Sanctum.

Sprint Master is a cheap, one-slot charm that's mostly useful for traversing Hollow Knight's locations, but the increased ground speed can help with dodging boss attacks without the need to dash.

The bosses' dream versions are quite demanding, though depending on your playstyle, Soul Tyrant ... objectives in Hollow Knight. All it takes is one missed jump, dash, or spell for the Sisters ...