This is the Tal Rashas Ladder push build - Currently Tal Rashas is the top wizzard build in season 13, and will probably stay in the top rankings because of how powerful the set it.
This build focuses on two major things. Meteor damage from your free etched sigil meteors, and the amazingly OP shields you get from magic weapon deflection while channeling.
Read over your Tal Rasha's set bonuses so you have a good understanding of how they work, but I will clarify the 6 piece bonus. Once you have 4 stacks of Tal's buff from casting 4 different elements you only need to cycle two elements to keep your tal's buff going. In this case channeling ray of frost and tapping arcane torrent to keep the stacks refreshed.
It's a good idea to get in the habit of cycling through all your elements every 8 seconds to keep your 4pc toughness rolling though. There is no visual marker for this extra toughness, but if you're doing max damage (aka casting meteors as well once per convention element cycle and 2 on fire) you should be just fine.
Death Wish, Etched Sigil, and Mantle of channeling all buff the damage you do while channeling so make sure you're using ray of frost or arcane torrent when your meteors come crashing down. Try to group up trash as best you can.
I explain the build and equipment in detail in the video below, as well as do live commentary while pushing what would be a top 300 LB clear at the time. My current rank with this build is top 40.