Andreas helped me with getting pictures of many of the cards below, some of which I'd only heard about before but never actually seen
BPhillipYork: This is one of the benefits from Control Magic effects, though it's not listed as such, but for 4 mana this is pretty decent
But theyre still going to see a lot of play
Rending Volley essentially says "destroy Archangel Avacyn," Magmatic Chasm helps break through board stalls against Bant Company and Humans, Uncaged Fury lets us steal games against decks heavy on sorcery speed removal, and Malevolent Whispers is great against decks playing huge Eldrazi and also fine when stealing a Kalitas, Traitor of Ghet or Archangel Avacyn
A major boon would definitely be the friends forever grouping, who even allow for several four-color combinations
There may be too many exile effects in Standard for the new Phoenix to take flight, but I don't think every deck is going to be packing Magma Spray, Utter End or Silence the Believers