(edited by Glenn.3417)
Superior Rune Of Lyssa
I think the reason is because it activates at the end of the elite. So if your elite takes about 2-3 seconds, that could affect it activating on the next use. Just get like a 5 second breather before using it again and I think you should be fine.
Master of all Professions
sPvP Rank Dragon – 8 Champ Titles – Ruby Division
As it notes on the Wiki entry, the same issue applies to the Basilisk Venom skill that the Thief has. For a Thief, it seems to only proc on every odd use. Being able to use the Runes every 1m12s on a Venom traited Thief is still kind of useful, so I’m tempted to use it. However a 1m36s proc on a Sigil traited Warrior is a noticeable difference and I’d have a hard time justifying it. (This is especially an issue for Warriors since you’re chaining casting your Rune, which can cause procs to fire off at the wrong time.)