Buff Totems are a new feature in Doom Eternal. When a Buff Totem is near, all Demons in the area are tougher, faster, stronger, and meaner, and will constantly spawn in buffed up and ready to harass the player until he finds and smashes it.
When enemies are empowered by the Buff Totem, they will be surrounded by a red glow. A message will also appear on the screen alerting the player to the fact a Buff Totem is in the area. Destroying the Buff Totem will remove the buff from all enemies.