When I have the 2 piece set with the invoker’s rings and I’m casting Fire Shield it is giving me +80% increased lightning damage and not the +80% cold damage as stated in the tool tip of the ring.
Further testing - Fire shield seems to change it’s spell type based on the type of spell previously cast. If I cast static orb before fire shield it counts as a lightning spell. if I cast Snap Freeze first it counts as a cold spell. If I cast fireball first it now counts as a fire spell. It seems to always change types based on the previous spell casted.