That flexibility is the main reason Ugin is considered one of the best planeswalkers in MTG
Sure, this is a good swing late game card but it is so useless against so many lists and in the all important early game that it is a pretty bad option in anything bar a sideboard
Diamond Valley is a little-mentioned member of the Reserved List, with just one printing back in 1993, and both its age and its obscurity make sales infrequent
As there's only one card just like it being printed, Amazon suggests your chances of finding it in a single booster pack are 0.00003%
This is a sleeved boosterwhich contains 10 cards
They have lithe, feathery, serpentine bodies with the head of a bird, two legs, and two wings