Trial Size Trial by Lightning

Trial Size Trial by Lightning
Starting NPC	Lacia, Mhaura (I-9)
Required Fame	Windurst Level 2
Additional Requirements	Summoner Level 20+
Title	None
Repeatable	No
Rewards
Ability to summon Ramuh Scroll of Instant Warp

Walkthrough

Speak to Lacia in Mhaura, located at I-9, on the second level, across from the Sailors' Stay. You must speak to Lacia as a Summoner.
If you qualify, she will give you a Mini Tuning Fork of Lightning.

This item is not a Key Item like the regular Tuning Forks, but is a Rare/Exclusive item that needs to go in your inventory.

When you are ready to go, return to Lacia and trade her the Mini Tuning Fork of Lightning (she does not keep the fork) and be warped to the Cloister of Storms for the fight.
Trade the Mini Tuning Fork to the protocrystal to enter the battle.

Note that if you do not trade the Mini Tuning Fork and instead just select the protocrystal, you will enter the regular level 60+ party avatar battle if you have the regular tuning fork key item.

If you loose the fight, drop the fork and talk to Lacia after 1 Vanadiel Day for another fork and repeat the process.

This is a solo battle.
There is a level 20 cap on this battle.
There is a 15 minute time limit.
You can only use Carbuncle.
Try to fight Ramuh Prime on Earthsday and do not fight him on Lightningsday.
When you complete this quest you keep the Mini Tuning Fork of Lightning, Horizon specific change is when you obtain an Avatar any route you can no longer use a mini fork for teleport to a Protocrystal.