Glaaki is one of my play group's arch-enemies, for the simple reason that when he's the AO the Mythos deck frequently gives the illusion of an actual intelligence at work in the placement of the cards. We've sealed him away only twice in all the times we've played, and beaten him in final combat a mere handful of times; all other games have been victories for him, and last night was no exception.
The first turn saw a driving rain environment that reduced our movement points by one and stuck around for almost the entire game. Then on the second turn, the SECOND TURN!, we drew the Disturbing the Dead Rumor! Not only did this raise the Terror Level twice, bringing out two Servants, but passing it caused Akachi to fail her Personsal story.
Just a little while later Roland Banks visited the Silver Twilight Lodge and was told the Lodge had need of his friend William Brinton. I was perfectly ready to give Brinton over to them to gain the membership and Unique Item, and avoid the Curse and probably being Lost in Time and Space. Then I realized why the Lodge needed Brinton . . . After considerable agonizing I still ended up discarding him and of course another Servant of Glaaki immediately appeared.
I'd like to say we'll get him next time, but experience leads me to doubt it.