Some objections:
sphinx's revelation: Blue sun's zenith wasn't A+ good.
trostani: Awkward to cast, doesn't read "You win the game" unless you have a centaur or knight token.
corpsejack menace: A lot of the time this will just be a
rhox brute
.
hellhole flailer: it's good, but not THAT good. Not bomb-level good, in that it alone wins you games.
jarad: awkward to cast, not that huge except lategame, doesn't win that quickly or consistently.
downsize: can be a nice combat trick, save your dudes from a trade and save you some life.
codex shredder: if you're playing a slow control deck, I think you want this.
dark revenant: 2/2 flier for 2 that can trade off with their 2/2s and ensure that your next topdeck isn't a land.
terrus wurm: surprisingly good. It's a lategame fatty, and it makes another lategame fatty.
axebane stag: Given the lack of good removal, this is sometimes actually something you're happy MDing
bellows lizard: It's like somberwald vigilante in AVR: sometimes you're playing the super-aggro deck that wants a 1 drop, even if it's mediocre.
psychic spiral: cast it for like 5-10 and you're probably winning that game, since your draws are more likely to be good and you have inevitability.
teleportal: Sometimes you just cast this on a clogged board and win. Like downsize, it would be better in different colors, but you can always splash it off a guildgate or 2. This format has boardstalls quite a bit.
grisly salvage: this is impulse + bin a scavenge dude. How is this bad?
viashino racketeer: it's OK for curve filler in rakdos.
golgari longlegs: this is solid. It can be a curve topper in rakdos and sometimes just be the biggest thing on the board, or it can just stop your opponent from attacking. With so little removal, sometimes fat just wins you games.
risen sanctuary: clogged boards + little removal = fat being good.
selesnya keyrune: It's mana ramp, or it's a body. And unlike the izzet one, it's actually a pretty solid one.
concordia pegasus: swings in clogged boards or blocks 2 power dudes. Not spectacular, but not bad...
gobbling ooze: bloodflow connisseur from AVR ate butcher ghouls. This guys has no easily renewable food supply.
axebane guardian: manafixing, ramping, and blocks their 2 power dude. This guy is GREAT.
giant growth: this is awesome. It is a 1 cmc combat trick that will lead to your guy winning the fight 90% of the time.
rakdos ringleader: I don't think I'd ever want this guy as my 6 drop. He's just 3 power. Kinda underwhelming.