The one card per turn helps a bit, especially early
Serra Paragon Image Whats great about this card: Serra Paragon is a staple in mono white Angel decks since it provides a lot of value
You can also try to incorporate Summon synergies with Garnet, Princess of Alexandria, Summon: Choco/Mog, and Summon: Fat Chocobo, all of which would work fine in a GW go-wide shell
Random Encounter is all about that single-turn kill-shot
The library ninjutsu ability can be activated during the declare blockers step, combat damage step, or end of combat step
If a player tried to remove it with a spell like [c]Disenchant[/c], nothing would happen to Darksteel Axe, although Disenchant would go to the graveyard after being played