Still sticking with good old violence, you draw your sword and swing it towards the door.

Suddenly, an invisible wall of air seemingly blocked your attack and reduce your blow to a mere touch. You realise you are bested by Merlin as you hear chuckling coming from inside the room. Kandasa appeared to be relieved too, as he pondered the consequences of such a rash and unprovoked act.

Ah well, guess you are going to be...

peeping in through the porthole
asking for entrance
returning to the throne room area