While I hope enjoy playing with the Angels deck out of the box, there are a number of cards you might consider to increase the volume of your angelic chorus
The best afflict cards are definitely Wildfire Eternal and Neheb, the Eternal, as both force your opponent to make a decision when blocking that could result in a worse outcome for them in the long run
[26] Creatures with flying, however, can block creatures without flying
(2008-05-01) Effects that would replace gaining life with some other effect won't be able to do anything because it's impossible for players to gain life
With that out of the way, lets take a look at the most expensive mythic rares
Gloom Ripper is a nice removal spell if youre playing elves, or if theyre in your graveyard