In ancient times long gone by, when the veil between the world of the humans and the realm of magic was thinner, allmighty wizards battled each other in epic duels to determine who was the master of sorcery and arcane wisdom. Armed with a Spellbook and with the aid of the enchanted Element-Stones, the sorcerers summoned fantastic Creatures and magical Spells. A wizard who had no more pages left in his Spellbook would eventually have lost the magical battle of wits.
The aim of the game is to reduce the cards in your opponent’s card-deck (or Spellbook) to zero by using the Spells and Creatures in your Spellbook. Players take turns that always follow the same structure. For each point of damage a Player receives through Creatures or Spells, he or she puts the top card of his or her deck on his or her Discard Pile (or Archive). Is a player unable to draw a card, he or she loses immediately.
From the BGG entry for Elemental Clash: The Basic Set