Just got a time nymph...yeah, not very useful. I suppose it's useful in a frack-you type deck or one that protests having permanents, but in both cases I think either precogs or houglasses would be better. Still, it's a decent enough creature for me to use it as such (6|8 for 9), and it would be great in a mono-time, though unfortunately mono-time isn't all that great, though with my 4 shards of readiness I feel the urge to experiment with sharded flying eternities
UPDATE: And today (day after I posted this) I got a fire nymph
lol-tastic. It's too bad I'm saving my electrum for the trials, or I'd upgrade a cremation-destroyer deck
@Drunkdestroyer: you should make a deck with purple+green nymphs so you can adrenaline antimattered enemy creatures xD