First, there is the Ancient Mew card given out as a promotion for Pokmon: The Movie 2000
However, with such a small margin, this price difference isn't likely to stay consistent, so expect frequent changes in placing between these two cards
If you cast this against aggro decks that typically don't run anything above 4-mana cards, you will be able to mill them in just a few copies of Tasha's Hideous Laughter
he cryptically says "the set also has a few other animals included with Bloomburrow in mind"
Though the auction offers one clear standout, there are plenty of other attractive items in store, including first-edition Venasaur, also from 1999 and in Mint 9 condition, and a first-edition sealed Fossil booster box
Some are really crazy or out there, like Eyes, for example, which one of my colleagues here at CSI is working on