Man, card collages get no love anymore it seems. I guess times change. I dunno. Anyway, as a fellow set spammer, I feel obligated to offer up my opinions.
>RW01
Liked it when I first saw it, like it now. Mechanic could fit in green as well, I think, sans flying of course. Which is flavorful since aren't GW a thing in this second set?
>RW02
I really, really wish this guy did something else with the frogs than anthem them. I know last time I suggested changing him you said you'd consider it for green, and I get it. But I wish the anthem, even though it synergizes with Incarnate, were on its own card, and this dude did something else. Maybe work in something with time counters to tie the two mechanics together since green ain't gonna do it?
>RW03
Probably fine, but keep in mind, you only usually get one of a rare in a Draft, so this isn't gonna show too well, since you will likely never get to tutor another one when the first gets Incarnated. Something to consider.
>RW04
Powerful set-themed board wipe, at least for a turn. Probably wins you the game when it hits, which it should at 5 mana. I don't like the high toughness though; that kind of value in addition to the mass exile seems a bit much. 2/3 maybe?
>RW05
Drawback in disguise some of the time. Rarely, perhaps, but the lack of a "may" on the tap ability might play poorly on occasion and that'd feel pretty bad to not get that +1/+1 you want because of it. Is that to help balance the card maybe?
>RW06
Much better than when I last saw it. Still not amazing, but it can't really be uncommon, so rare it is. I just think it feels fiddly for little gain. If it were much cheaper on the Retired side, it'd be more interesting to play. I advocated it last time but I suppose you'll see how it plays when you playtest. I might be way wrong.
>RW07
Still feels too cheap to me. I dunno, I feel like it should at least be WW.
>RW08
At that cost it's fine, I think. Game's over once you play it, 90+% of the time.