Build and run your Dungeons & Dragons 5e campaign on World Anvil!

START NOW

Bio Sphere

Wondrous Item Rare

This small glass sphere contains a miniature diorama of a savanna inside it. Regardless of the orientation of the sphere, the savanna is always oriented right side up.   When the sphere shatters, all land within a 100 ft radius is transformed into a savanna. Within the radius, the temperature instantly becomes temperate, the soil becomes fertile, and dry grass sprouts up wherever it can. 1d4 dry oak trees appear in random unoccupied spots within the affected area. 1d4 elk (see Monster Manual, pg 322) and one lion (see Monster Manual, pg 331) also appear in random unoccupied spaces. These creatures are wild animals, and act of their own initiative.   Buildings, roads, and other man-made structures are not affected by the Bio Sphere, though they do gain the appearance of a structure that has been abandoned and overgrown.   Constructs must make a DC 16 Strength saving throw, or be restrained by tall reeds that appear around it. The construct may repeat the save on each of its turns.   After one week, the temperature falls back to what it was before, though the grasses, trees, soil, and animals remains.

Weight: .5lb


 

World Anvil: The Ultimate Worldbuilding Toolset & RPG Campaign Manager

Created for Dungeon Masters and Game Masters, World Anvil has everything you need to build your own homebrew RPG campaign setting, and run your games, either online or around the table!

  • Speed up prep with a whole library of community statblocks you can copy (and edit!)
  • Enthrall your players with interactive maps, timelines, and a whole wiki of your world
  • Keep track of NPCs, PC character sheets, monster stats, treasure, journals, notes and more
  • Quickly look up essential info with session notes, campaign map markers, and bookmarked lore at your fingertips
  • Build your own campaign setting, or expand a prewritten campaign, with expertly created worldbuilding templates and prompts
  • Control who sees what in your worldbuilding wiki with secrets and subscriber groups
  • Collaborate with players and GMs to build the campaign setting of your dreamsĀ 
  • NEVER lose your notes!

GET STARTED TODAY!

Take the first step. Create your account. Your world and characters await!

100+ RPG systems