Umbreon is one of the most popular Pokemon ever, and most of the top Prize Pack cards feature Pokemon that can carry demand based on their popularity alone
Victimize costs three, sacrifices one to return two tapped, so it's mana efficient and therefore beloved
Its special ability, Chlorophyll, boosts its speed when battling under the sun, making it especially formidable in strategies based on weather conditions
That said, creating the ideal curve for a Bird Typal deck might be easier than you expect
It gets worse though, you look through your hand, but you dont have a counterspell, oh no
and only the Base Set is the exception, where the no rarity (1st edition) print run is rarer and shorter-printed than the one with rarity symbols (unlimited edition)