As an infernal lord Pyros is made for the guild boss and although seeming complicated, he actually has a simple kit. When he ults he stops his allies briefly, hits a target for up to 700% damage, and then buffs his team mates until the ultimate ends. With awakenings that make gearing easier, and improve vulnerability uptime, you are free to stack regen and attack speed giving some crazy results. A go-to lord for guild boss whenever you run infernal dps.