'Unique Card', among the players of the game, is one of the most favored items of the game.
Even speed runners and hardcore type players have acknowledged the significance of this item.
Considering it from the perspective of a 'Gacha' game.
If the attack enhancement card (advanced) can be considered a 'four-star' item, then this 'Unique Card' can be considered a 'five-star' gold item whose probability of appearing is barely 0.001%.
Such a rare item is obviously not ordinary.
This item has many restrictions on it.
You can't use it during a fight; you can't use it unless you are in a perfectly calm state.
You can't use it on a mentally affected character; neither can you use it on a cursed character nor on a De-buffed character.
Your character must be in a perfect state to use this card.
