Its sort of the game designer's way of signaling, Hey, this card is important! Every new set of cards that comes out takes place in a different world (called planes), so the legends of each plane tend to pop up whenever a new set comes out in a plane the game has already visited
Using the wtfast Ping Test is one of the best methods to do so
They have been dismissed as fake, restoring to collectors a measure of hope, however unlikely, that it might yet be theirs
That said, the last few times theyve done this, its been the Marvel cards and those have consistently done well
1/1s on the ground are worse than 2/2 fliers by a lot, but Namor provides all the evasive damage you need, and merfolk have plenty of other support pieces