TrinityCore/TrinityCore — pull request #12824 by mik1893 (2014-08-11 08:44:34+00:00)
Title: Core/Spells: Stormstrike should stack for different casters

The behaviour of stormstrike is wrong:
When you have 2 Enha shamans in raid comp, their stormstrikes overwrite each other, so only the last shaman performing it can use the procs. This simple correction fix it