Lurker: White, 0/1, two 'tap to do a thing' abilities, one gives a temporary +1/+1 to another creature and the other does some kind of defensive buff to multiple allies? I dunno enough about MTG mechanics to have a good idea for it. Also something where she's a particularly good target for buffing, maybe? Like if you put a buff on her she gets a couple +1/+1 tokens or something.
Dusk: Green, 2/1, tap to generate a 1/1 animal token, and then some kind of ability that lets her defend allies - I'm vaguely inclined to give the animal tokens banding, but a) I don't know if that actually does the thing I want and b) this ability isn't even used any more according to the wiki, so I've probably just dated myself by even suggesting it. *shrug*