Rip open booster packs, each with its own pool of heroes and spells. Hunt for rare cards and build a collection powerful enough to crush the toughest foes.

Survive to earn Mastery. Use it to upgrade your heroes and spells, unlock powerful new abilities, and turn your collection into an unstoppable force.

Defeat each chapter's boss to unlock new booster packs, heroes, spells, and challenges. Every run feeds the next, giving you more power and letting you survive a bit longer.

…and there's more to discover beyond the tower. Travel between mysterious planes of existence, each with its own secrets.