Rosh87 said:
1 card - essentially = -10 enemy cards from their deck.
If enemy is only using 50-ish cards (fairly standard) - you have knocked out 20% of his deck with 1-card.
Granted, all this requires getting Yog in play early enough to make a difference - but this is not that hard when you couple 3 x Seekers of Mystery with 3 x Doppelgangers - meaning essentially 6 Seekers (potentially). If you did some kind of Yog - Shub mix - you could get Ghoulish Worshippers in their too, for additional reduced-cost Ancient Ones.
Yep. This is a great combo in a Yog discard discard deck. Combine it with Things in the Ground which helps you get Yog in quicker while adding in more characters for the Curse of the Stone to hit. A lot of times I can have Yog in play and ready on my turn 2 with this (using Journey to the Other to setup the Things in the Ground).