Commander staples, tournament-relevant Modern and Legacy cards, premium foils, and older scarce printings all qualify
A message along the lines of: But being as this is a Mystic Remora, the most annoying fish in the world, and would put you in a tough spot, you've got to ask yourself one question: Do I feed the fish
The same user also notes that the card was only given to close friends and certain Wizards of the Coast employees so it was never in general circulation
The objective is to initiate attacks and deal damage to opponents
With both Weavilee and Darkrai being two high-health EXs too, you can switch them out consistently, and cards like Leaf allow you to pull them out of the active spot for no cost
Squishums uses Whirlpool to trap and remove foes that threaten her other teammates