Previously, he only thought about using the Lizard Queen's positive influence in Tun Marsh, but he forgot that negative influence is also an influence.
The greed of the Giant Dragon was something he understood deeply; regardless of the effort involved, they wanted the biggest share of benefits. Even the kind Metal Dragonkin were like this, and the evil Colored Dragons took it to an extreme. The Black Dragon's reputation for cruelty, despicableness, and greed was second only to the Red Dragon, and the greed of the Lizard Queen reached an extreme.
Allowing them to live in Tun Marsh, not eating them as food while they were alive was the greatest kindness in the eyes of the Lizard Queen Kurgor. Not to mention preserving wealth, even food had to be handed over mostly, barely maintaining enough to not starve.
