Here’s his lore if you’re interested

The Marz family is a small side branch of a larger family that was once very prestigious. The Marz’ fall from grace started about 50 years prior when the current head of the main family joined the Sorceror’s Guild, he was Agnir zo Marun. Agnir’s men had just discovered a race of people with strange blood. This blood was produced much faster and in greater amounts than humans. This caused their skin to be a translucent greenish sometimes reddish colour. It was eventually discovered that the blood had various latent magic properties that were unlocked when tested with Reality magic. However after the first few individuals of this race appeared it was clear that this was NOT a new race of non-humans but rather humans infected by some sort of magic plague. The King at the time was planning on finding a cure but there were no experts yet, as this was a high level water magic that originated from a dead magic beast. The king had died soon after and Agnir persuaded the young king Ravan to let him and his kin work to find a cure. In reality he was doing cruel experiments in order to extract their blood to be used in magic items which he built a monopoly on. If these items were mishandled they would lead to infection and thus creating a loop of new test subjects. The Marz branch objected to this and decided to take in some of the infected before Agnir could get his hands on them. However he found out about their plan and publically denounced them calling them traitors.