Scarlion & Targa Leech Guide

1.  Create an expedition
2.  Add an attacker (preferably one who can pin)
3.  [Optional] Add a Bishop or Phantom with maxed Holy Symbol
4.  Have your attacker pin Scarlion at the right side of the map
5.  Hit the boss once (preferably during Cancel Weapon Attack to avoid Miss)
6.  Drag your Bishop or Phantom into a different party when your attacker about to down the Scarlion
7.  [Optional] Cast any EXP related buffs before he downs Scarlion
8.  When the Scarlion B1 is defeated, you should be at level 51 and 99.99%. Have your attacker hit Scarlion until he spawns mobs. Do not down Scarlion B2 before the mobs are summoned. Kill a mob and level to 52. Ask your attacker to down Scarlion B2. Repeat this step with Scarlion B3. As a result, the 1st Scarlion should level you to 56 and the 1st Targa should bring you to about 62.

Some other info...

1. B1 damage should be less than 1000 
2. B2 damage should be around 1200 - 2000, job dependent 
3. B3 damage should be around 3000 - 5000, job dependent 
4. If your HP is less than 4000, you can have your Bishop or Phantom cast Holy Magic Shell
5. Your hit rate is 100% during Cancel Weapon Attack, regardless of your level