Rarity symbols first appear in documented product lines on March 5, 1997 (Jungle), so anything from the 20 October 1996 window is effectively the original Japanese Base Set release
ET, 9/26/25 - At the time of this writing, all SKUs have sold out except for the Commander Deck - Game Edition ( see it at Amazon )
In an ETB (enters the battlefield deck), while it will stall all your creatures for a turn, it can net you all those ETB triggers, AND, its 'any number' and that means you flicker the ones you want to flicker and leave your attack bombs alone
Crabs will definitely find a place in decks featuring The Ancient One, along with the pirates that once plagued Standard
Giving 2 rested Don adds to that aggressiveness, making it difficult for opponents to Counter out of two of your attacks