Early understandings of what the nascent format should or could be led to some unplayable cards and some miserably playable ones (hi, True-Name Nemesis!) But one thing these decks largely got right was the powerful and unique tri-color legends
(They can't be blocked as long as defending player controls an Island.) When this creature dies, create X 1/1 blue Squid creature tokens with islandwalk, where X is the number of +1/+1 counters on this creature
Kappa Cannoneer is another beater that can go the distance, being able to attack as an unblockable 5/5 or bigger
The total number of printed copies remains unknown, but given its private distribution, it is likely one of the rarest MTG cards in existence
However, it is worth noting that Sol Ring is way better in 60-card formats where you could play four copies
It's like a baby Dark Ritual