Inallas Eminence makes every wizard a double threat for just one extra mana
Then theyve added the shadows and made some other small changes, so the fourth, fifth, sixth, and seventh print runs were unlimited edition, and these four print runs dont have any differences as far as anyone could tell (I have heard some rumors about some semi-glossy unlimited edition Base Set cards however, which Im still investigating - although those seem to be regional differences instead of print run differences)
Im clearly not a fan of the medium sized set, but the card designs inside the set itself are the quality weve come to expect from Wizards
In Vintage it often functions like a one-card engine that reuses busted mana and spells and then ends the game, which is why it earned the nickname Yawgmoths Win
For decks full of one or two drops, this card can be a nightmare for which they will happily trade multiple cards, as the Keg amounts to a two mana one-sided Wrath of God or sometimes even worse by killing artifacts like Cursed Scroll, Winter Orb or Ankh of Mishra
We have excellent targets despite mounts appearing in only two sets, including Fortune, Loyal Steed to flicker Caradora for more tutors and Bulwark Ox to utilize the counter doubling