The first time I played Cthulhu Fluxx with the Hastur card I immediately saw the potential for strategy and have settled on using the word "Turn" most times I have the opportunity to play it.
What words have you used, and to what effect?
I've played it a few times and the one that always seems to get people to trigger is Rule. We've also used draw, play, Doom with various effects.
Completely inhibits normal communication. Everyone contemplates doom and madness. Lovely.
"Play" makes for an interesting time.
I was just going to post that! Yes, "play" is a good one.
"Creeper" is a good one