Sam stayed there for three days and finished the designs. They are not some new designs that he created out of blue. They are already premade and most of them are the designs done by the students and other designers within the Dusk organization. They are not even his own designs.
When the leader of the Primate sect looked at the designs he was ecstatic. Sam killed around nine elders. Generally, that kind of enmity wouldn't go away that easily. Even Sam had forced them into the contract, they would still hold the resentment.
But the Primate sect leader lost the resentment immediately. He didn't care if Sam had killed the elders, he only cared that he has new cards in his sect that could help them prosper even more.