The Citadel of Chaos

You draw out the skin and the creature hisses loudly.
All its heads retreat and it remains still, watching you.
There is a door on the far side of the room and you slowly make your way towards it.
Halfway across the room, a head darts out and snatches the fleece from your hands.
But instead of attacking you, the Hydra slinks back into a corner.

You move on to the door cautiously.