The player must head to the Castle on the Sea. There, they have to locate the stone tablet where King Red Head is trapped (behind the rip_indra True Form arena). After interacting with the tablet, the player will be told, "Here lies King Red Head... Perhaps one day, he'll be released from his mental prison." (If the player hasn't killed the rip_indra boss).
After the previous procedure, the player should head to the Great Tree and travel to the top of the tree. An invisible NPC (called Mysterious Force) is standing here. The player will have to talk to the NPC, and will be teleported to the Temple of Time.
Then, the player will have to head down the hall and talk to the second NPC, which will result in the player teleporting back to the previous NPC. After this, the player will have to go back to the Sealed King (tablet). He will show the player the message "That place may hold the key to a greater power, but you must undergo a trial to grab hold of it. Powers involving time always work best under the light of a full moon."
The player needs a Mirror Fractal in order to be able to complete this step: After this, the player will have to find a Mirage Island and stand atop the highest peak of Mirage Island. The player will have to activate the race ability during night time. After the activation of the player's Race's ability, they will have to stare at the moon for a few seconds. If the player is on mobile, they will have to leave a finger touching the moon on their screen (Note that: this does not require a Full Moon after Update 19 (Valentine's Update of Blox Fruits). Then, the player will be shown the message "Your Mirror Fractal has resonated with the moon." at the top of their screen, and the moon will start emitting a flashing light. Then, the player will have to look for a Blue Gear that has spawned somewhere on Mirage Island and touch it. The gear glows brightly and has a light blue color. The gear will despawn when the night ends.
After following the previous procedures, the player will have to head to the Temple of Time. Instead of going forward to the Mysterious Force NPC, the player will have to turn left to the empty hallway. Then, they need to face the right wall and go upwards. There, they will see a lever near the entrance, which is to be interacted with and pulled. Once the player is able to pull the lever, they do not need to repeat all these steps when changing to a different race.
Unlocking Draco Trials:
The player must obtain Dragonheart and Dragonstorm which can be obtained from Dragon Hunter by crafting.
Once the weapons are obtained, get them both to 400 mastery because they are needed to light the relics after the island is frozen.
Once done, start a Leviathan hunt using a Beast Hunter. After that, bring its heart to Hydra Island's waterfall, then go to the Dragon Dojo's Dojo Vault and light the relics near it then go inside the vault. This will bring the player below the Dragon Dojo.
Talk to the NPC under the Dragon Dojo. It will start a cutscene where a hologram of the Prehistoric Island descending while dialogue appears asking the player to do the final trial. This NPC can also be used for getting the transformation upgrades