Rift Bloom

A standing region of thinned boundary with no visible tear. Channelers sense one before any instrument detects it, and the Covenant of the Ebon Creed keeps a list of the ones it has found.

Extraplanetary

Exposure

Rift Flux

Ambient Rift Energy at a high, unstable density, where channeling is stronger and less reliable.

WIS save, DC 13. End of each hour. Your next spell attack roll has disadvantage, or the target of your next spell that forces a saving throw has advantage on it. Roll once on the Surge Table.
- Dense field
  
  A spell cast here that deals damage or restores hit points adds its level to one of its damage or healing rolls, and a cantrip adds 1. A spell that does neither gains nothing. The bonus cannot be declined.
- Unstable
  
  A natural 1 or 2 on a spell attack roll, a target's natural 19 or 20 on a saving throw against a spell, and any failed concentration save each roll on the Surge Table in the GM's Manual.
- Instruments
  
  Anything calibrated against a stable Rift background reads wrong. Navigation, dating and detection checks that rely on one have disadvantage.
- Warded
  
  A ward, a null field or a feature naming Rift density removes the save and the Surge rolls. The damage and healing bonus goes with them.

In play

Channeling

Inside a Bloom, spell attack rolls have advantage and creatures have disadvantage on saving throws against spells. A natural 1 on a spell attack roll, or a target's natural 20 on a saving throw against a spell, rolls on the Surge Table.
Planar pull

Anything native to another plane that enters the region will not willingly leave it.