The unique jewel

[the Langolier]

the stats on the jewel wont stack, like mf, rather there would be another chance of the chain lightening attacking. since the chance is 100%, it doesnt really matter. but the patch could change the stack/or give things other chances properties for items.

Actually, spells that have a percent chance to cast on striking/when hit DO stack. For instance, a 12% chance to cast lvl 3 charged bolt on attack and a 10% chance to cast lvl 3 charged bolt on attack will stack to 22% chance to cast. Although chance to cast on death is pretty stupid, I'm sure the same thing would apply here.