Not necessarily, once you get an angelic pact down it's in play, so you can always trigger the ability to sack the Pact. Atleast early days, since you will see more aggro until probably after the PT, this kind of build could work. Post side against a blue deck, you can replace with Gideons from SB... the deck needs work and it's a test build from Kenji (Hareruyamtg)