Ideas for an Astronomer Artificer
So I'm playing in a 5e14 campaign at the moment and my character is an artificer/druid multiclass. She's currently artificer level 2 and her story is at a point where she's likely to be taking her third level and getting her subclass soon. But none of the established subclasses really fit her. I've considered before asking to use the Archivist UA, or maybe the Cartographer class from the 2024 version. But it also could be cool to do a homebrew option, and my DM seems potentially open to it. .
Her druid circle is the Circle of Stars, and her theme is very strongly associated with the stars and the night sky, so I think some kind of Astronomer would be fitting, and so I've been considering what kind of features a subclass like that could have. A lot of what I've been thinking about is centered around navigation, since historically, that's been one of the main uses of astronomy. So proficiency with navigator's tools seems natural, and maybe some kind of feature similar to Keen Mind, about always knowing which way North is, it being hard for them to get lost, so on. I don't think that'll necessarily provide a ton of actual gameplay utility though.
Another idea I had was a feature like the Divination Wizard's portent, but for knowledge rolls. So some kind of ability to study the stars and lock in a roll, that you can use later for a knowledge check if you fail. Not sure about the exact details, but that seems flavorful and useful as well.
I also thought it might be cool to be able to cast Bless as an artificer spell, as a mechanical representation of you and your allies being guided by the stars. This would also make sense for the character I'm playing, since she's very support-oriented.
I wanted to get some second opinions on the concept though. What are some actually useful features you would associate with a magic astronomer? The character probably won't go to level 20 or anything, and since she's a multiclass, the most important features to me are at level 3 and potentially at level 5, but I do still want the subclass to feel "real", in the sense of actually being something that could be printed, even if it's just gonna be a private thing for our home game.