Give a cooldown to the third boss of Sanctum's burrowing/poison

This boss is incredibly infruriating. Me and a friend had to watch the scorpion boss be inside the ground for almost 3 minute. We were barely able to fight him a single minute.

If he does the poison, we have to focus on dodging, to not get our honour hurt, so we barely had any time frame to actualy attack him. Killing him took us an entire 5 minute when it could have been done in one.

Give like a 15 to 20 second cooldown before he can go underground again.

Please. He's so maddening to fight for this alone.