(edited by UndeadCreepshow.5316)
Guild Missions?
You don’t exactly start Guild Missions. You need to be in a large enough guild with Art of War 5 and 30k+ influence to spare to unlock the first guild mission – Guild Bounty. Once that guild mission is unlocked (takes about 3 days or less if you have alot of influence), you can participate in it with the rest of your guild.