"Igni Lotus!"
Eren cast his spell, powering it with his infinite mana core.
This was the true-domain spell that had made Eren fork out loads of Mana Quartz. This kind of spell was beyond Malcolm's selling reach.
***
Eren had bought this spell from his guild. The kingdom's approval came a few days after the Bulal Blood's mission completion. It had turned Stardust guild into a three-star organization, granting it enhanced rights and new resource allocations.
The guild's existing members were now allowed to make use of the guild's three-star status. They were given access to better resources by the kingdom.
Thus, all the rankers who had money bought higher-tier spells of their element that they weren't allowed to have access to. Some of the spells fell into the restricted category.
It meant that the restricted spell usage in question would be illegal for the rankers if they were seen using it. Unless they had bought the spell legally, paying the kingdom a hefty tax for it.