Talk:Nero Claudius (Caster)/@comment-179.176.249.58-20170829143159/@comment-27789594-20170829160507

You fill the servant's NP gauge more than 100%. By doing this, the overcharge effect will get stronger when you use the NP.

However, if you're not a whale/extremelly lucky player, you just do a NP chain, which also increases the % of the NPs that comes after the first one. 1st NP will be 100%, 2nd will be 200% and the 3rd will be 300%. Alternatively, you can also equip Demonic Bodhisattva to your servant.