Glyph of Souls
Your Ritual of Souls spell no longer requires a Soul Shard.
With this glyph, there's no more excuse not to drop a Soulwell in the Battlegrounds. Not that there ever was one, really, but this is another one for those lazy bums! Pretty useful for those times when you keep wiping on a boss, which usually finishes up shards without the opportunity to get more.
Glyph of Drain Soul
Your Drain Soul ability occasionally creates an additional soul shard.
We might as well call this the Soul Shard specialization glyph -- an extra shard for Drain Soul? Yes please! Even if you pack your bag full with 28 Soul Shards before heading into an instance or raid, Warlocks still find themselves in situations where they run out of it, specially for those who have Shadowburn thrown in. Timing Drain Soul just right so it doesn't gimp your DPS is a pain in itself, so an extra shard for the effort is pure win. Besides, procs like these are like an Azerothian mini-lottery. This is also perfect for those lazy Warlocks -- and there are a ton of those -- who only bring a handful of shards to an instance.
I feel like i've been swiped at a little.... ;D