Chapter 508 City Killer
Ekham's right arms grew immediately, but for a Diamond Rank to regrow their limbs, they had to sacrifice their life essences as well. Life essences were basically their life span, potential, and overall power.
Diamond Ranks rarely lost a limb because their body were extremely durable. Warriors had easier time regrowing their limbs, magicians needed some sacrifice, but it could easily be fixed with some potions and rituals.
As long as Ekham survived this battle, he would replenish his life essences again, though it would cost a lot of money. Diamond Ranks generally consumed a lot of resources to keep growing stronger. Even though they only became stronger by a tiny percentage, it was all worth it in the long run.
Most Diamond Ranks needed someone with a lot of resources to rely on. That was why nobles and kings could have so many Diamond Ranks under them. Of course, these people value loyalty as well, and the Diamond Ranks had to proof it.