Hear me out – We all love giving our players homes. Yes, that was an Em dash, I use them. –––––– look –––––
A place most likely taken by force, used to recharge, coordinate, and get some sick bonuses.
This PDF contains three Environments (two of which are the invasion or takeover of the tower, while the last one is the tower itself.
A sort of a Frankensteins monster between Castle Siege and Pitch Battle (from the SRD), but in a new, wizard-friendly package. If your players should succeed in completing these two events, their reward is the tower. I think it's a neat idea, and take no responsibility for how incredibly overpowered this might be at your table.
To be fair, the tower shouldn't be a go-to resting place, but rather a Bastion (looking at you D&D 5.5e), that they can evolve, renovate, install new stuff in, and of course... have to defend from OTHER adventurers and monsters – lest their tower be taken!
BONUS: Print friendly version and player handout now added.
Feel free to test this fun little One Shot-friendly adventure, and let me know what happens. And leave me a review, please. ❤️

