Quote:
...what? Explain please.
The only thing that is requires is Deadly Poison on the boss and a Bleed. Deadly poison is automatic, and in 90% of raids someone else puts up a bleed.
Probably higher than 90%.
An Arms Warrior DEFINITELY will provide one. A Fury War probably will (I'm pretty sure they use Rend AND spec into Deep Wounds).
Cats and Bears will provide one, as their rotations use them pretty heavily (Cats do, at least).
A Marksman Hunter will be able to provide one, though possibly not consistently (I don't know if their rotations have them using one of the three abilities that put one up every 8 seconds).
2 Hunter pets can also cause a Bleed.
If you have another Rogue, you can make them do it.
There are other sources, but these are the reliable ones.
Worst case scenario--you put it up yourself, or do it every other (/every third) raid with other Rogues you run with.