Summoner Towers

Summoner Towers would be a new pan-dimensional structure that would comprise 8-12 storeys, in addition to the roof, high above their base. There would be a number of possibilities for each storey, including:

Library Room - lots of bookshelves, loot chest with paper, books and 1-3 enchanted books

Armoury Room - contains an armour stand with random armour on, three anvils, and a loot chest with iron/gold ingots/nuggets, and some armour

Trophy Room - Item frames containing mob heads (not wither skeleton)

Summoning Room - large multicoloured stained-glass 'crystal' structure in the middle of the room, a loot chest containing paper, books, and two summoning crystals

Roof: Always the top of the tower, it would be a columned, open area with a harbinger at the top

As mentioned, these would be pan-dimensional, meaning they could also spawn nether- and end-variants, with minor tweaks to some of the rooms to reflect their location.

Summoner Towers would be built out of obsidian, in an octagonal arrangement. Each side would be 7 blocks long, and one side would have an iron door in the middle on the ground floor, to serve as an entrance.