Byrdonis Egg

Byrdonis Egg is a Quest card in Slay the Spire 2. Quest cards are a new card type introduced in the sequel, representing objectives that the player can complete during combat for special rewards.

The Byrdonis Egg quest sits in the player's hand or deck and tracks progress toward a specific draw or play condition. Once the condition is fulfilled, the quest completes and grants its reward. This creates an interesting tension: the quest card takes up a slot in the deck but offers a powerful payoff if completed.

The quest is thematically tied to Byrdonis, an Elite enemy found in the Overgrowth (Act 1a), suggesting a lore connection between the avian elite and this mysterious egg.