As I mentioned some cards are used in combination with other cards to perform the spell because the spell has several items the witch needs to perform the spell. Some spell cards require that you have a caldron or broom or pentagram to cast the spell card, Or you might have to make a potion and need to collect all the cards that the potion is made from like Wolvesbane,BatWing and Eye of Nute. You may also be required to rcite the spell out loud that is on the card and make some kind of gesture. So this I think the game is complex enough to be intertaining without being too much like Magic the Gathering Which does not require several cards to play a single round. The reason for this is I want the Witches to collect the cards so they can perform certain spells.