To start I will say that I do not like the card. It's the most significant of the cards removing orders and in my view, a huge boon to Lannister specifically. And a huge negative to Baratheon. Pairing a no support and Cercie can be devastating as you can't even then countermarch. It's a free in anywhere. The westeros deck cards shouldn't give a single house advantage and another house disadvantage no matter the strategy played by either house.
Web of Lies should be renamed to "Lannister goes from 5-7"