Hey there! I just wanted to ask a quick question out of curiosity, why was Compelled by the Rock banned?

Lots of possible reasons. The most often cited being that the effect didn't belong in Lannister, and its inclusion essentially gave them an answer to everything (character control, draw, income, attachment control, etc.) that was not available to all Houses. It was primarily seen as a balance issue for House Lannister.

Ahh, I was wondering seeing as it didnt seem that over powered by itself. But yeah, I get how it would make the Lannisters good at basically everything! Thanks =)