Mana Rips and Surges for Lay Lines and Nexus in Gurps 4th

MANA RIPS

            Sometimes mana will spike outside of the network of ley lines and nexus. These mana rips are like tiny fragments of ley lines. They are much smaller than standard ley line fragments, as shown on the following chart.

Mana Level	Diameter
Very High Mana	3D6 feet
High Mana	2D6 feet
Normal Mana	1D6 feet
Low Mana	1D3 feet
No Mana	None

            Otherwise their strength is determined exactly the same way as a ley line.

            Most mana rips are not permanent. Only on a roll of a 6 on a D6 is it permanent otherwise it will form and dissipate in a matter of decades, roll 3D6x10 years for the length.

            Roll 3D6x10 years again for the length of time it will take the mana rip to reform on the site.

MANA SURGES

            A mana surge is when the power of a ley line, nexus or mana rip suddenly spikes. Roll on the table for the ley line strength and add that to the power of the affected phenomenon. These surges are often only the size of a mana rip.

            They last a few days based on the total mana level.

Mana Level	Length of Surge
Very High Mana	1D6+15 days
High Mana	1D6+10 days
Normal Mana	1D6+5 days
Low Mana	1D6 days
No Mana	1D3 days

            Surges are also semi regular occurrences, but frequency is really a matter of overall mana level. The higher the innate mana the more frequent the surges will be.

Mana Level	Time Between Surges
Very High Mana	3D6x10 weeks
High Mana	3D6 months
Normal Mana	3D6x10 months
Low Mana	3D6 years
No Mana	3D6x10 years