Safewright Quest doesn't really do anything here; they are literally just four more Plains. Moonsilver Spear is weak even in casual play. If you have spare money, Nykthos, Shrine to Nyx , Emeria, The Sky Ruin , and Flagstones of Trokair could all help and will retain their value.

Karmic Guide and Baneslayer Angel are really good. If you find a few Archangel of Thune , I would up to 3-4 Seraph Sanctuary as well.

You will find more success if you have a stronger (or more consistent) early gameplan. Wall of Omens is amazing; you should be running four no question if you can get them. Wrath of God helps as well; since your mana doesn't depend on creatures, play it, then start dropping fatties. Or for extra fun, play it after Avacyn, Angel of Hope .

Those are great suggestions. Just what I needed! I will get to work on hopefully acquiring those and begin revising it. Thanks!

Running four Emeria is a bad idea. They enter play tapped, they don't count as Plains, and you rarely will have more than one or two good creatures in your graveyard. 28 land is too many as well; you should shoot for 22-24.

If you can't afford Nykthos, you should be running Wrath of God or (the very affordable) Day of Judgment , since your curve is pretty high. They also work really really well with multiple Serra Avengers - maybe run four of those?

You will not regret running the full playset of Wall of Omens .