Pen and Paper RPG House Rules

Making our favorite games even better

Shadowrun Overhaul: Mana: New Definitions: Background Count

Background Count: This is the normal amount of mana (or density) in a region usually about the size of an American county or traditional City State. There are often many fluctuations or deviations from this at different locales within the region depending on the actions of geomancers, plate tectonics, mana lines, and other causes but for the most part the region has a norm. Worldwide the median average mana density is a 0 on the Schwartzkopf Ambient Mana Scale which spiked up to a 1 during the Year of the Comet and was a -1 prior to the comet and a -2 in 2050. The change in the world’s Background Count effected some magical principles in particular interactions between the Astral Plane and the Physical Plane involving grounding spells. This change wasn’t local but global so even though there are regions today with a Background Count lower than the norm in 2050 a magician can’t ground spells from the Astral to the Physical at those locales or during a Shen event.

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