So the idea for this deck is pretty straight forward, inspired by Bishop of Wings. Ideally you should be able to get this combo off consistently by t3 or t4. You're after a t1 souls attendant, a t2 bishop of wings, and a t3 resplendent angel, which will net you the 5 life needed to pop his 4/4 token drop, gaining you another 5 (or more) life depending on your land drops. You're going to want to pop Resplendent as often as you can.
After that it'll take a pretty aggressive deck to keep up with your lifegain, and to contend with your vigilance flyers. On average with my playthroughs with this deck you're looking at about 10 life and 2 angels a turn, which can get out of hand quickly around turns 5 or 6. As the game goes on you should be able to draw into your Shalai's for protection or Lyra if you want to go a little wider with the offensive lifegain. The deck is somewhat vulnerable to removal in the early stages, so if you're playing against a deck with a lot of removal you'll want to make sure to strategically use your brave the elements for blanket protection, and runed halo's for anything else if you can't draw into a Shalai.
On the sideboard side, I recommend keeping 4 banishing lights ready, and swapping out the Icons and Congregates should you run into problems your angels or protection can't deal with. The deck works pretty well with either configuration.
Always open to suggestions, this is a deck I'm still actively working on, but it's won me quite a few games so far with obscene levels of lifegain! Enjoy!
*f-pre*