Question about "house X only"

By Meridian99, in 2. AGoT Rules Discussion

Hey guys,

Can anyone tell me what the use of the "house x only" phrase in some of the plot cards and other cards? Does that mean that that effect only influences cards from house X?

Thanks!

Hello and welcome to the forums.

House X only is a deck building restriction. In terms of play it has no impact.

It means that only House X may have that card in their decks.