The Angel then gains, You cant lose the game, and your opponents cant win the game. Now, you cant do this at instant speed, but its still a very potent effect, and being able to put this on whichever Angel you choose makes it an essential card for any Angel deck
Legacy is an incredibly fast format much of the time, so this will often be backbreaking
Prior to the release of Khans block Dack was quite niche, he was played as an out to artifacts or in decks with strong graveyard synergies
Glorious Protector has ended up mattering largely as a giant flash blocker, but Guardian of Faith seems better at executing the role of protection spell
Winged Boots are simply worse than Lightning Greaves or Swiftfoot Boots for keeping your commander alive, and Quick Draw isn't too concerned with its commander being the killer
Set two cant arrive soon enough