The practitioners of High and Dark Magic can manipulate the Winds of Magic more readily than ordinary human wizards.

To represent this, if an army's wizards have at least one High Magic spell card or at least one Dark Magic spell card, the player can discard some or all of their magic cards and draw replacements from the magic deck before spell casting begins. This gives the player an opportunity to adjust his hand of magic cards to a hopefully more favourable mix of special cards and power cards if he so desires.

It would be extremely unusual for an army to have wizards with both High and Dark Magic spells. If this is the case the player may adjust his hand for either High Magic or Dark Magic but not both during the same turn.

If you have any High Magic spells, then you may discard any power cards you wish. Place the unwanted power cards face up on the table to make a discard pile. Draw the same number of replacements from the magic deck. By doing this the player sacrifices power cards in the hopes of getting more special cards to counter an opponent's magic.

In both cases you must discard all the cards you want to exchange and pick up all your replacements in one go. Once you have decided which cards to exchange you cannot change your mind and exchange further cards. Of course, you don't have to swap any magic cards at all if you don't want to - after all, you might be perfectly happy with the original deal.