I see this card as a kind of conceptual
companion to Mentor of the Meek, from the first
Innistrad block. They trigger on many of the
same creatures, and add a card-drawing dimension
to white that it often lacks. The Bishop is
rather slower, of course, but it's still worth
considering as it has two tribes that are often
relevant in casual play; while Shadows over
Innistrad does not have quite as strong a tribal
component as its prequel, the Spirit tribal
elements from back then continue to make an
impact in casual settings, and both they and
Clerics have a lot of relevant members that cost
three or less. The fact that Edgewalker plus
Bygone Bishop makes your creatures not only draw
cards but cost zero intrigues me greatly!