It is a great example of a card that does enough useful things acceptably well that it is playable despite doing those things so poorly compared to what you could have do any one of them
With enough tokens, it can help you combo off, rebuild after a huge turn, or convert extra bodies into the mana needed to finish the game
The most convincing ones have been sticker fronts on genuine backs
All the Digimon in the deck has a Special Effect called Save, which allows you to place a deleted Digimon under a Tamer Card
Honestly, its not much more complicated than that
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