Originally Posted by Vauk
66% uptime isn't taking into account chance to proc or the fact that the majortiy of the time that 3rd SF won't get the benifits from this. Remember that modifiers are calculated at spellcast not spellstart.
|
True, but if you're at the right point in your rotation, it will affect the IS or MF you add in.
Proc on the first SF after IS/MF : Affects 2 SFs (unless you're lucky)
Proc on the second: Affects 2SFs
Proc on the third: Affects 2 SFs and an instant.
Proc on the fourth: Affects 2 SFs and an instant.
So out of the four possible (assuming no overwrites) procs, half will affect 2 of your 5 casts, half will affect 3 of your 5, or on average you'll affect half of your casts, or about 75 spell damage, depending on your luck. You could tweak it to always use the last 2 seconds (or so) to cast an instant and increase its value, but as Benita said, I'm not sure how it would affect sustained DPS, as it's not nearly as mana-efficient.