The mist was quick to enter the courtyard, before settling into a slow flow around the area, hovering just above the ground. It almost made it difficult to see the ice starting to creep up onto the stone of the castle, even the vines and bushes while it froze the water in the fountain, giving it an icy shine.

Rattle rattle rattle rattle.

Shadows became more prominent as the air started to chill even more at a rapid rate. The courtyard started to flicker with darkness as cloak after dark cloak swooped above the ground and trees, blocking the access any light had into the area moment after moment. In a matter of moments, the dementors swarmed up into the courtyard, swooping and and diving in through the corridors outside and back out again. An entrance into the castle was needed. Shouldn't be too hard to find.

Tasty souls. Tasty tasty souls, they could smell them!