Corruption yes or no....

[Kintarooe]

in 0/21/40 build?
I'm a full shadow destro lock (my profile is in armory) and i was thinking about use or not corruption (2 sec cast) in boss fight.
I have do some math and for this gear i don't think that corruption can high dps.
With raid buff:
Shadowbolt average Hit at the end of raid is about 3,3k and average crit 6,4k in 2,5 second of casting time.
corruption in 2 second of cast time don't reach that damage and dps (average tick is 430)
then... if i have 2 seconds to cast corruption, always i have 2,5 sec to cast sb. the damage of that Sb is > than corruption.
Pls discuss.
i don't know if i'm wrong.
(instead, i use immolate in non static combat... in static combat, i thing is not a good choise.)

[Kintarooe]

doing some math :
average hit Sb 3k - cast time 2,5 second
average tick corruption : 400 - cast time 2 sec (x 6 tik).
Dps is still equal for time of cast but sb 1 time to 3 is a crit.
for example ... think about a circle of casting with corruption and no.
1 corruption have 18 sec duration + 2 sec initial cast = 20Seconds
I count all Average hit/tick that gains debuff, buff, elixir... (at the end of the raid) ecc.
Case1 (corruption + spam Sb with 202 hit rating and 33% crit).
2 second cast Corruption = 400 x 6 tick = 2400 after 18 seconds.
left 18 second / 2,5 sec cast Sb = 7 cast of sb
7 cast at 33% crit are 2 crit and 5 hit (average)
2 crit = 12k and 5 hit = 15k
then 12 + 15 + 2,4 = 29,4k in 20 seconds

Case2 (spam sb with 202 hit rating and 33% crit)
20 seconds / 2.5 cast = 8
8 cast at 33% crit are 2 crit and 6 hit (average)
2 crit = 12k and 8 hit = 18k
then 12 + 18 = 30k in 20 seconds

then, with average hit/tik , 1 cast of sb is more efficency than 1 cast of corruption (for a 0/21/40 build).

all imho :D

[Cartumandua]

http://www.wowace.com/wiki/DrDamage

I use this add-on. It gives me a damage per second of cast time number on all my dps spells. that way I always know what is best to cast. I find that with my stats corruption and immolation are still higher dps than shadowbolt, so I keep them up. I think this will be true of most destruction builds.

I also suggest people check out the wowace add-ons. Very convenient to have a single tool to update all your add-ons.

[Edwidget]

With a 0-21-40 spec the numbers are misleading. While immolate and corruption may seem to do more damage per cast time, that is not taking into account improved shadowbolt. The job of destruction locks in the raid is to keep Improved Shadowbolt on as close to 100% as possible. Improved Shadowbolt helps any lock not using fire (which you shouldn't because shadow is better), helps shadow priests, and in turn helps healers and any other mana users through the shadow priests' abilities.

While it may seem like a loss to personal DPS, the best thing you can do for your raid is cast as many shadowbolts as possible. Your immolate and corruption damage is relatively small when compared to the raid-wide effects of Improved Shadowbolt.

[Gritz]

If you're not as max range, then yes, cast it. Usually you'll be at max destro range, if so, than don't bother running in to cast. Always cast immolate unless your raid leader tells you not to because of a lack of debuff spots (rare).