It's rare in any edition, including the Beta, Unlimited, Collector's and other editions, besides the Alpha issued in 1993
Modern Horizons II may be one of the most challenging sets ever to write a top 8 cards article for
Found most in tempo based blue decks but also found in a wide array of mid range decks
#4 Sliver Hivelord This is the source, the line unbroken since the calamity that brought such monsters to our shores. Hastric, Thunian scout Hastric seems to be an expert on the sliver species considering the volume of quotes he has on other sliver cards
The bundle includes a few other things, such as a Shiny Mewtwo coin, a new card sleeve, a playmat, and a Shiny Radience frame + cover