Altered Time - your #1 World of Warcraft Mage resource!

Hi guyz. How can i gear my fire in Mythic+? I have 2 Wildfire trait and 1 Titans tait. crit build + pyroclasm seems bad in m+. ill try to sim whit Dungeon slice but all times say me: Crit and Pyroclasm. Can i use an alterative or a better build? Or what the best stat in m+? Ty for helping. Jillzombi...