All four of them were busy generating liquid mana with four big mana generators; they were the old stationary version ones, powered by mana stones of four different elements. This was more complicated than just converting liquid mana from air—the four types of liquid mana were only usable by their respective users. So they all had to do this four times and fill four containers, each with liquid mana of a specific element.
The liquid mana from fire mana stones was red in color, green for wind, dirt yellow for land, and blue for water.
Damian had light and dark mana stones too, but they were rare and he didn't have a big supply of them—in the 30% space occupied by his mana stone chests, only 2% were for light-element mana stones and another 2% for dark. He didn't even have a chaos-element mana stone; they didn't exist. Or they did, but he couldn't find any for purchase back in Edgeheaven.