Let Me Take a Breath

After Cassian used his power to create a barrier wall, Theodore fell to his knees and used his sword to support him. Honestly, spinning around playing with the zombie golem was very tiring. Theodore felt his energy being sucked out. 

Theodore said Cassian and the others still had to defeat the remaining zombies. Fortunately, there weren't. Fortunately, many didn't, so it took little time to beat them. 

Theodore closed his eyes as he took a deep breath, then he looked down at his palm when he opened his eyes. 

Theodore saw a mana crystal larger than what he had gotten so far. 

"Why is the mana crystal bigger? Does the size of the mana crystal depend on the zombie's strength?" Theodore muttered uncertainty.