You have to have a dragon amulet and complete the great fire war saga at Vulgars in battleon.
After you have completed it go to lady Celestia then click elementize.
click the element you want then click primal.
Some elements don't work with primal unless you have the elements orb like the fire orb which i have but i still cant use primal fire.
Do the great fire orb saga to be able to make primal dragons. ALL elements need the orb to become primal. Also, NO ONE has the fire orb. SEPULCHURE HAS IT. (you can verify that at the battleon forums)
Edit: Primals you cannot become are: Fire, Water, Nature. Bacon as an element only becomes avaliable during the Final Friday 13th War. Becoming Primal unlocks a new skill when your Dragon is in Titan mode (provided you have unlocked Primal Skill in Sunbreeze Cove)
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The markings are attainable, by completing the Primal Skills quest in Celestia Cove and elementising your Dragon using the Primal button (you cannot primal elementalise with Fire, Water and Energy currently)
It is a bit hard, because you have to go to Lady Celestia, then click on the button which says 'Primal Dragon Sklills'. This will take you to fighting a titan and if you win then you will gain two skills. To unlock the primal dragon, you just click on the primal button where the elemental changing thing is. You also have to do ALL the Fire War quests first.
To recive a dragon on Dragonfable, you must purchase a $20 Dragon Amulet. This allows your baby dragon to grow.
Id recommend primal light it's one of the first orbs you get and it is good against almost all super hard bosses.
dragonfable code
to unlock the dragon store in DragonFable go to BattleOn, talk to yulgar, complete the incredibly long fire war quests, go to Sunbreeze Grove talk to the woman there and complete primal training
get a dragon amulet
it is a dragon amulet
You have to buy it.
Primal dragon skill is an attack that you can use against boss's. U can only get the primal skill after going to see lady celestia's apprentice and doing her quest. You must also have the orb for that element. This is a very powerful attack and its the only way i beat sepulchre.
You cannot get the Legendary Wind Dragon in DragonFable.