
To get the last one, Magria, I had to release my corehound. Unfortunately, I'm the one assigned to heroism in my raid group (due to a recent shortage of good mages/shamans) so I HAVE to have a corehound ready, so I need to remove a pet from my stable.

After much consideration, I decided to release Shy-Rotam. I got her long after I did the quest (but before cataclysm), thanks to a guildmate who still had to do it, but now that she's always there, I feel I can safely let her go, and wait for more stable slots in the future.

By the way, I'm currently looking at her in the wild, and lo and behold, Rak'shiri is there as well, and Sian-Rotam is nowhere to be found.
