Whether Ob Nixilis is similarly powerful remains to be seen (fingers crossed he's not), but the fact that everyone's talking about it lends credence to the strength of this card
If that creature would leave the battlefield, exile it instead of putting it anywhere else
The biggest boost to that was the printing of cards like Dark Depths and Thespian's Stage and the changes to the Legendary rules
While this card has likely been power-crept out of any real play (due to the fact that any player with open mana can also create lots of their own furry, long-tailed creatures when the Liege bites it), it still stands as an important historical Squirrel-enabler, likely leading to it retaining a price above $5
PSA has apparently only recorded seven versions of the bronze Pikachu, alongside six each of the gold and silver trophy cards, in its entire portfolio
In addition, he and his Pro Tour team (Ben Seck and Jamie Parke) will be donating all of their Pro Tour winnings to charity: 75% to the ALCU and 25% to Jon Finkels Gamers Helping Gamers