I saw the new Apocalypse Dragon in the marketplace. I heard it has four elements required but I didn't see that in the game, how do I breed it? Let's hope I get it before the world ends. :) Thanks!
Yes, the new Apocalpyse Dragon requires four breeding element: Plant, Lightning, Cold and Metal. So you need two hybrid dragons that contain those elements.
A confirmed combination would be Magnetic Dragon (Metal and Lighting) and Lichen Dragon (Plant and Cold). It's a limited dragon and only here for a period of time.