The city of the dead (2) - Escape

With a click, Craine's collar loosened before falling apart. As soon as the collar's magic flow was broken, its own mana devoured it. Or at least this was what Adriana was speculating as she collapsed in exhaustion. 

Spitting out the buildup of blood in his mouth, Craine immediately cast Therpevo (Tier 4 heal) on Adriana, which should be capable of healing broken bones and most internal injuries.

He followed it up with Anthisi (Tier 4 rejuvenation) to supply Adriana with energy and also help her recover some of the mana she had surely spent in destroying her and his collars. 

With that done, Craine had used half his mana, and while he wished to free the others, he had injuries of his own.