Riddle of Eternal Fire

So this is my first time doing a riddle (I hope it doesn't get solved too quickly and some people try to answer - that would be awesome) So here I go: [i] You once knew me as a friend, I used to guide you, I used to make you feel barbaric. But then you knocked me back for something else. You, Guardian, I...will...have...my...REVENGE! I am a lord and I will destroy you. I come in great numbers and possess any who are worthy of possessing me. [/i] Hint: Over time, I may become more explosive...or not. I burn whoever I can. My master has a lovely voice which you can hear with battle cries. My will is not my own. If you choose to obey me you will have great delight. Who/What Am I? Winner:vVElicoVv Answer: [spoiler]Flame Shield[/spoiler] Explanation: [spoiler]In the skills tree for Sunsingers there is an option for Solar Wind and Brimstone. Also Sun-singers "has a lovely voice which you can hear with battle cries is just it being used by a warlock. Also if you melee a guardian/enemy in PVP or PvE you get automatically a shield. And many people must have access to it in order to unlock it.[/spoiler] Good Luck! Edit:1 Oh Gosh 20 Replies! Thanks! Keep Guessing! Once we reach 30 replies I will give a hint. Edit2: As promised here is the hint. Edit 3: Almost 80 replies!!! You guys are amazing! Keep showin' the love Edit 4: Woke up to see a 100 REPLIES!! Literally spilled my milk all over my computer. Anyway it might be time to have a hint...yes? Also, I have school today so for most of the day I'm gonna be busy and I might not be able to reply to you guys until later. For the hint I will be posting it later today. Keep Guessing! Good Luck Guardians....you're going to need it....... Edit 5: We have a winner! Also Thank you guys so much for all the support and kindness. Expect more riddles in the future