This is a system I have not tested in real life yet. Perhaps instead of finding an elegant minimalism it creates a papery irritation too small to matter. Time will tell. The Problem with Inventory Inventory is a weird thing in RPGs. The Bag of Holding of D&D fame has always been a fascinating contradiction to me: if you want to play a game where inventory/encumbrance is a meaningful game mechanic then why would you introduce an item that negates it; and conversely if you want to ignore inventory in your game why bother paying lip service with an item that does nothing except negate a rule you were ignoring anyway? The Bag of Holding, to me, signals a halfway position where you would rather ignore encumbrance altogether but feel some diegetic explanation is owed for why you can carry infinite arrows. Systems that encourage player limitation - you only have 12 slots, you can only carry your strength + 50 units of items, you have to draw on your character sheet exactly...
A couple of ground rules about Vows of Death They must be sworn before a religious and legal authorities, and witnesses of the lay populace. They must be grammatically and existentially feasible. They must invoke some higher or greater power as guarantor. They must be accomplished within a month of swearing them. You must name a specific, named instance of a person(s) or creature(s) you intend to slay. A glowing sigil will take root in the flesh of your right-hand palm as contract. Striking the named target will deal 20d6 damage. Failure to complete the deed will result in divine retribution by the invoked guarantor, usually in the form of 20d6 damage. Anyone can swear a vow. Anyone. You do not need to be sober or sensible while making a vow. Throw these in your carousing table if you want. Or not. I'm not your dad. D8 Vows made while Drunk or Otherwise Come to be Regretted you wake to a great excitement in the village. It seems you got very merry...