This card seems quite strong in Shops. It has the magical 4 casting cost that makes it a fairly consistent early play, and a flying 4/5 doesn't have to contend with much in combat in current Vintage. The card selection is amazing and a rarity in brown, only missing out on Lands and Dismembers in Shops. The only issue is the Crew 3, which is a bit awkward with the creatures currently typical of Shops, many of which have 1 or 2 attack. You can always play 2 creatures and double crew it though. It also puts a lot of eggs in one basket against Swords to Plowshares, Phyrexian Revoker, counterspells or artifact hate. Getting this stolen by Dack Fayden would also be a disaster. Overall I could see the card being a roleplayer.
EDIT: now correctly posted to single-card discussion