This one was a special request by Si. He requested a micro-adventure featuring a morkoth. The surprising thing is I've been wanting to do one featuring these weird ass, rarely used creatures.
This adventure is underwater. The players are going to need some sort of magical or artificial breathing assist. The underwater aspect is going to make it particularly dangerous. Use whatever drowning rules you see fit and let the players know about them ahead of time. Let them know the clock it ticking as soon as they submerge their heads.
A Micro Adventure, published by Tim Shorts on his Patreon page.