Quest Cards
Quest cards are a new card type introduced to Spellfire in the Rebirth booster. The motivation behind designing these cards is to increase the amount of combat in the game, hence making theme decks more competitive.

Functions and Limitations...

A player is limited to one quest card for deck construction purposes. A quest is played in the same manner as an event (i.e. at any time, unless there is some restriction specifically preventing it). It is played on one player and affects only that player, unless otherwise specified. In the vast majority of quests, the affected player cannot win the game until the quest is completed. A player can only be affected by one quest at a time. Completed or discarded quests go to the Void.