As per Announce #2407, ylem mines are out for each city on Sapience and offer daily quests for you to undertake for ylem gain, XP, and gold rewards that scale to your level. Some of the upcoming daily quests may be difficult or overtuned, so we'll be reviewing and monitoring your progress in the coming days and weeks.
When we first conceptualized the mines, we wanted to offer something that could allow people who don't have as much interest in PK but would still like to contribute beyond gathering mist from denizens around the world. I hope you enjoy it and it's certainly been a long time coming. Thanks in advance for submitting ideas and bugs in regards to it.