We now have random craft able orbs, look like we should be able to do something similar to rune arms.
Say drop a basic rune arm of any of the damage types- for example we shall say force damage.
Maybe even open up the possibility on negative energy as a type-does level drains on blast hit.
Put a min level on it so I set it to be level 15.
I then for the prefix slot craft the shot pattern such as electric storm, at this point it will still use the default damage type force.
Next for the suffix type that shall change the damage type- so I slot in electrical
and since it is above level- 10 I can craft an extra effect.
Perhaps chose 1 special effect from a list of named rune arms, such as lightning strike, or make your weapon that you are holding vorpal or ghost touched.