White:
Radiant Grace: this doesn't solve the aura problem, but the card it "draws" when it dies is nothing to sneeze at for aggro or midrange, as such things are measured.

Blue
Lantern Bearer: this reads as better/more interesting than at least Jace's Phantasm and Silver Raven. Blue having flying men with recursive upside feels way better than giving blue more cantrips.

Black
Closed Curtains: not entirely unlike Disowned Ancestor, I think this will be. Roadblock more than it is a true control finisher in the cube. I don't know if black needs this many roadblocks, yet.
Red
Kessig Wolfrider
This is weaker and slower than Grim Lavamancer, but that card is a format star (or at least darling, to me). This is very fair token generation that makes fairly aggressive tokens.
Green
Dig Up: Traverse with greater proactive control and much stronger upside. I love this.
Ascendant Packleader: this will never be anything other than a 2/1 in green. While that's not something to sneeze at, I've cut all the true vanilla savannah lions from white.