This card may be played in the current magic phase when it is your turn to cast a spell.
All the volatile magic over the battlefield is instantly earthed through your wizard, draining magical power from the area and bringing all spell casting to an end for that turn. Any magic cards still held in the hands of either player are immediately placed on the discard pile, including any cards that may normally be retained. Any spells that are currently in play are instantly and automatically dispelled.