Obelisk

Description in game:

Vestiges of ancient magic are scattered throughout the world, the most notable of which are carved stone structures which bear a great many symbols and runes. These ruins are all that remain of what appears to have been some kind of ancient civilization. Whoever, or whatever, built them, they clearly had a considerable knowledge of magic, and used it to place protective enchantments over such locations that still persist to this day.

Obelisks are structures which generate at the surface throughout the overworld. Obelisks are tall and narrow, with an open structure at the bottom containing a monster spawner directly on top of a chest containing minor magical loot.

Generation

Obelisks generate on the surface of the overworld. Their default spawn frequency makes them fairly uncommon, about as common as abandoned mineshafts. Obelisks generate in all biomes. Except the mob spawner and chest, obelisks are built exclusively of runestone. There are five different obelisk designs, which differ from each other in size and shape - however, all contain the same mob spawner and loot chest arrangement in the center.

Each obelisk is aligned to one of the seven arcane elements, which can easily be seen from the color of the runestone from which it is built. This element also determines the type of the remnant spawned.

Obelisks cannot be aligned to the magic 'element'.

The loot chest found in an obelisk contains a variety of minor magical items, including magic crystals and elemental crystals, spell books and scrolls, and wand upgrades, as well as other loot such as books, paper and gold nuggets.