I compared this Card with conjurer, and even if conjurer is only for nature, i daubt that this card has a too high amount of negative effekts to be an uncommon. As an example, you play this card and got a common nautr/illuion, and after this, your card is lost and the effeckt you wanted to have, which ws the gaining of a rare nature/illusion card, can't be used. I would say that its better that you can choose the card which will be replaced by this card and when its new, then the mode choosen will have none effekt.