This dungeon showcases the massive variety of Dragon-type monsters that have been introduced into the game!
The format is unique, with each floor presenting a random Attribute dragon from a different series. The series include: Samurai Dragons, Mystic Dragons, Ancient Dragons, Stone Dragons, and at last–Starter Dragons!
Each monster you have face has a chance to drop–allowing for multiple opportunities to collect complete series.
Building a team with a strong HP component might help you endure the variety of attacks that each of these dragons can throw at you. Otherwise, try to factor in spike leaders that provide high damage output.