What's in the box?

About Ashes Reborn: Red Rains – The Corpse of Viros, from BoardGameGeek:

Ashes Reborn: Red Rains offers players both new and old an exciting new format in which to wield their favorite Ashes cards! The Red Rains have returned and with them the Chimera - towering monstrosities that threaten to wipe humanity from the face of the planet! Only the Phoenixborn, those superhuman wizard-warriors of Argaia, stand between humanity and extinction. The Red Rains turns Ashes Reborn into a solitaire or cooperative experience, with players banding together to fend off and slay one of the fiendish Chimera. Choose your Phoenixborn and build your deck, then face this foe alone or with a friend you can trust. Wield cards already in your collection, or add in the new spells and allies included here! Everything old is new again, including fresh takes on classic Phoenixborn! Prepare for an all-new Ashes experience, and prepare to see this beloved game in a brand new light! -description from publisher