Descendants Path and The Prismatic Bridge can get more dragons on the table quickly, Reflections of Littjara lets you make additional dragons (some of which no doubt possess enter the battlefield effects), and Steely Resolve can keep those dragons protected
Dragons are typically Red, but there are tons of Legendary Dragons in Blue, White, Green, and Black, and then add in cards like Catacomb Dragon, Ebon Dragon, Exalted Dragon, etc
Games can bring extra profit through engaging merchandise, and learning how to create and then sell such objects can be a matter of surviving as an aspiring game developer
Six mana to cast
Thickness (microns): Dragon Shield Perfect Fit Sealable (75), KMC Hyper Phoenix (130) 100 Double Sleeved Card Thickness (mm): Theoretical (71), Practical (75) Water Test: Pass Deck Box Fit (mm storage): Fit: 100 good
If you get to play it with hellbent, then you get a decent upgrade on Lava Axe