If a player tried to do this in my game, myself and all the other players would look at them strangely. They probably have a mindset that wasn't conducive to playing with us and so wouldn't likely be invited back.
Even if the player was compatible with your group in every other way, or are you just assuming that they wouldn't fit in other ways, if they thought to do this?
What if they expressed that they assumed it was as intended, because it makes sense to them in game, and in terms of how the warlock is built? Ie, what if I was that player, and made the argument that I've made in this thread?
Actually it does worl with any spell. Provided you're using Pact Magic and it has a long enough duration.
Hell, other spellcasters can do it with the longer duration spells and a long rest.
There's no rub, some spells are simply long enough you've time to recharge your magic before they expire. Warlock magic just regains quicker.
Yep. And that is entirely as intended, and is not a purely gamist thing. It is part of the game world. Some spells last a long time, and maintaining them for days or whatever doesn't stop you regaining your magical energy when you rest.
I genuinely don't understand this thread, at all. Why is this a problem, in any way?
How on earth does this not fit the
in world narrative?
Also, just want to point out that one could use rabbits, instead, or whatever. and you don't need to keep one around, just...ya know, go hunting. Only need to keep them is if you go into a place where you expect to not be able to find an animal to kill. And you don't even have to be the one to kill it. It just has to die.
But seriously, it's hard to imagine a warlock or his pals trapping a rabbit, putting it in a cage, and letting the warlock sacrifice it in the morning, and then cook the thing? Seems pretty simple and reasonable to me. Or the ranger setting traps at night, bringing the warlock along to check them, and since the ranger is super good at the whole foraging thing, it mostly likely works, and so the warlock Hexes the animal, ranger puts it out of it's misery, bingo bango, breakfast.
If your DM isn't nice about the chances of trapping animals, you capture some rabbits, keep them in cages. Or, most areas have birds.
Or you train your warlock to hunt.
Depending on what counts as a sacrifice, sometimes you can do this, sometimes you can't. No big deal. Even if you can't, you hex the first thing you fight that day, hope you can take a short rest after, and go on your way.
ANd yes, in my homebrew setting that began as a setting for novels, before I ever played an RPG*, Warlocks sacrifice animals to regain magic, and to make their magic more powerful or last longer without burning through their own energy as quickly.
And yes, maintained magic can last through long period, even through sleeping, if the caster prepares for it. Some can keep a spell going for days or weeks, but doing so without sacrificing something, or burning through some kind of magically brewed resource, etc, is exhausting. Most Warlocks, and really most magic users, keep animals for this purpose, and eat their sacrifices, setting aside the best parts of the animal, and some part of it's bones, blood, and brain, for the being(s) to whom the animal is being sacrificed.
The ethical vegans hate it, and argue that it's unacceptable because magical reagents can be used instead, but casters argue that reagents are expensive, and come with side effects (mostly a hrder crash later, and excessive hunger and thirst, and in extreme cases, susceptibility to illness), and they would have eaten a meal with meat anyway.
Many vegan casters preserve the meat and feed it to their pet animals or offer the whole animal to the spirits. No additional benefit comes with doing so, but the spirits like it.
*((when I was a kid. just found a story I wrote and illustrated set in this world from 3rd grade, when everyone in the school had to write a story and draw pictures for it and put it in a spiral book thing)