The spell does not consume the dagger only the clay, ash, and mandrake root. With a spell focus, you would only need the dagger which you can wash, rinse, and repeat whenever the homunculus dies.

who made this flying rat

the terminally uncreative will view this spell as a waste...but one feature of this creature makes it worth the investment: Telepathic Bond

Leave your homunculus at home, you don't need it in the field. Instead, place it in a well-stocked library. Just leave it with all your books, Hell! if your DM is willing (and running Lost Lab spells) you can send it More books with Speedy Courier. Every time you find a book of lore, or folklore, or any kind of useful tidbit send it home to homunculus.

congratulations, with a single 6th level spell slot you now have the internet in your brain. Anytime you need to know something just say "I link with my homunculus and tell it to check the section on Arcana, Common Year 1750-1800 should get it" or whatever, and you can justify having a library in your head.

Even If the DM refuses your library-card just have the homunculus Think for you: woo hoo! even with a 10-int/wis that's a help action and therefore advantage on all History/Arcana/Religion/Nature— Whatever! if you're Thinking about something (as opposed to doing something practical, I suppose) you can ask the homunculus for ideas and reap free advantage 'till the cows come home.

Quote from Song_of_Blues >>

The major grey area is that the description says nothing about being able to interact with objects, including doors or windows, so its movement might be easily restricted.

 well, as a (somewhat) autonomous creature it would be able to. The only restriction would be it's physical limitations (size and strength mostly, it has a high enough dexterity for some fine tasks and the picture is a creature with hands and thumbs).

So would a warlock artificers homuculus be able to allow you to speak to creatures thorugh if you went great old one?

its not a spell anyone can make them

Quote from wonderwit12 >>

its not a spell anyone can make them

 

 The spell is literally called "create homunculus" it's 6th level and just says it makes one of these using the same steps as specified in the creature description

While this isn't a combat tool, I see huge utility with it.

When you read the mm entry, the homunculus is effectively a 2nd body that you can control simultaneously. As well unlike other spells, you don't go catatonic when using your "other body". You share a mind with it and can experience everything it does without drawbacks. This guy can sit at home and look up anything you want in real time, do spell research for you (creating new spells), hold conversations across the planet while you're in a dungeon, let you play politics in 2 different places at once, the sky is the limit. If you ignore combat, this is like a 2nd character that you control.

As well, since its  a creature, its not a automaton. You can tell it to do things and let you know when its done, so you don't need to be distracted. Either way, the spell lists no detriments for using both at the same time. Some dm's might say "thats op", but then forget this is a 6th level spell with no combat applications. It SHOULD be really good.

Arcana domain clerics can pick up a 6th level spell from the wizard spell list, so provided you pick that subclass, technically yes. 

I find homunculuses really useful in higher level campaigns because I can throw 50 of them at a level 20 party of 3 people :)

Hey guys, what do you think the general consensus is on if these guys need air I’m thinking of using one to go to the moon

Is the master the same as its creator or can it chose whose master it is?