As for what Tifa making it into the deck while the other characters have to settle for booster packs really means, there's a chance someone at Square Enix made that decision based on which in-game romance is canon
Still, the card was a Tier 1 staple, even frequently appearing in nonblue decks
Hes also got a strong ability that lets you draw two cards whenever hes played, making him well loved by players and collectors alike
Because you get to choose who gets to draw with you, you can make a short-term alliance with one player, protecting you for a few turns or forcing another player to spend a coveted counterspell to put a stop to it
Games are always close, and the luck of the draw combined with these lighter strategic elements are enjoyable
Its similar to One Piece in that your main resources (memory) dont actually exist in the deck, so once again we have a game thats trying to forego any issues similar to mana screw/mana flood in MTG