The 'occupant' of the tomb went missing many years ago, and once hope was given up of their return, the crypt was built as a way of saying goodbye for the community. This could have been a local hero, person of importance, a mage, etc. That being said, the 'loot' in the crypt consists of funeral offerings and grave goods donated by the same said local community. When these things show up in the would be heroes hands, the locals are going to be a special kind of pissed off. The main lesson to be learned is that not every crypt or tomb is a place to be looted. Some are places to show some respect for the dead. May the PCs be so lucky that upon their demise the friends they have made and people they have influenced would be willing to raise a memorial in their honor
Minimal old school sub, not bad. To improve I would add some details to differentiate the sub from the movie. Some ideas might be giving the villagers something other than a stash of weapons to protect, or a different motive for the bandits to be stealing their grain.
I like the idea of the Ring of Wolf Control, but the origin is mysterious and I would be curious to know it. Magic items are made for a reason, and this ring could have a very interesting backstory.
Possible idea, the ring was made for a noble who bore the wolf as the heraldic animal of his family. Nominally not a problem, until wolves start raiding sheep pens and harassing locals. Killing the wolves kinda looks bad when they are your chosen symbol. So, he had the ring made to control the wolves to hunt elsewhere and leave his peasant's livestock alone. Later, he found he could send the wolves to hunt his enemie's land, ruining his deer stock, killing untended sheep, etc