Liquid. Wyvern Series, #2

Book 2 of the Wyvern TrilogyPelya Jornin is an agent of the Blue Wyverns Mercenaries. She and her apprentice Tina investigate internal corruption and external threats to the group. A year and a half since graduating from the recruit program, they have performed their duties with exceptional success. Commander Brynin of Covert Services now tasks them with investigating whispers of a potential attack in the Kingdom of Swelth.
Someone may be trying to steal a newly made Liquid Wyvern, an enchanted artifact priceless to the group. The commander also charges them with investigating rumors of the Rojuun. The creatures are her personal obsession. Gossip of their existence has cropped up in Swelth. It is the commander's hope they will be able to learn more about the mysterious denizens of the underworld. Pelya and Tina embark on a dangerous mission through the kingdom of Swelth.
It takes them into the beautiful and perilous depths of Ryallon where danger awaits them at every turn. Along with them comes an odd young wizard by the name of Jolen Klunjun. He practices a lost art called Throuala Magic that is just as much of a danger to his allies as it is to his enemies. The Wyvern Trilogy is a swords-and-sorcery series following the journeys of Pelya Jornin. After leaving Dralin, she travels the world searching out injustices and her own purpose in life.
Along the way, she makes many friends and even more enemies.