4-Player Push META

Trash Killer
Nova Necro, Natalya DH, Meteor Wiz, Scythe Necro

This position usually requires a build with good Area of Effect (AoE) damage like Death Nova or Meteor and huge temporary buffs like Arcane Attunement, Spellsteal, Assimilation etc. The main task is executing the damage rotation properly in order to progress through the Rift. With a double-support setup, the build must also be powerful enough to finish off the Rift Guardian by equipping Bane of the Stricken.

Rift Guardian Killer
Rathma Necro, Corpse Spider WD, Invoker Sader, Impale DH

The RGK requires a build that revolves around high single-target damage, often combined with fast attack speed skills to stack Bane of the Stricken.

Main Support
zBarb, zDH, zMonk

The main Support role requires good pull abilities, good overall damage & toughness boost. The main task here is to pull monsters together (for Area Damage value) for the Trash Killer, drag Elite packs along, scout the map and keep up damage & toughness buffs.

Secondary Support
zDH, zMonk, zNec

The second Support usually provides even more toughness and damage buffs to the group. The main task here is often very simple: Keep up all buffs while sticking close to the damage dealer. Sometimes the second Support also helps to scout the map and engage enemies.

Concept
In Season 34 we can Sanctify one of our items giving it an additional power. The biggest winner here is the Raiment Generator Monk who gets a ridiculous x15 buff from Sanctified Way of the Hundred Fists. This turns a mid-tier RGK into an absolute monster capable of destroying absoultely everyting even in tier 150 Greater Rifts. With two of these bad boys you can even omit the Rift Guardian Killer and just punch it to death.

Alternatively, you can go for a more traditional Trash Killer such as Death Nova Necromancer. This build boasts exceedingly high AoE damage thanks to density scaling from Bloodtide Blade. On top of that it's extremely easy to play, has short rotation and also quite tanky as LoD builds tend to be. In Season 34 it gains a small boost for Sanctified Death Nova but it's really nothing to write home about.

The second, less conventional option, is LoD Meteor Wizard. The build itself doesn't benefit too much from the season theme but it can make a great use of a special zMonk build. With Sanctified Wave of Light the monk can create and then kill "enemies" giving the wizard tons of Archon stacks. This build is a lot more difficult to play but when executed correctly a single Meteor kills everything up to Rare Elites even in the highest Greater Rift tiers.

Whatever DPS you choose, they are supported by a zBarb pulling Elites and grouping monsters together with Sanctified Whirlwind. On top of that, the Barb provides massive toughness buffs with Ignore Pain Mob Rule and War Cry. Additional offensive and defensive buffs are provided by the zDH.

Concept
If you want to delete the Rift Guardian smoothly and consistently it's best to recruit the help of another DPS, this time specialized in single target damage.

Rathma Army of the Dead Necromancer is one of the strongest boss killers in Season 34, capable of killing the Rift Guardian in a couple Army of the Dead casts at higher Paragon. Sanctified Army of the Dead bossts the build even further. If your Trash Killer happens to be not a Necromancer, then Rathma RGK also brings Frailty to the party which is a powerful group buff.

However, unlike previous seasons, Necromancer is not alone at the top this time. Coming out of the left field, Raiment Generator Monk becomes a serious contended thanks to absolutely ridiculous Sanctified Way of the Hundred Fists. On paper this build has even more damage than the Necromancer but it's extremely squishy and using it purely as an RGK is a bit of a waste because you can stack Area Damage and wreak some serious havok in the rift as well.

As an RGK, simply follow the team during the Rift, try to pull enemies along and survive as much as you can. Your time to shine is on the Rift Guardian where you can unleash your full potential.

Concept
The Trash- and Rift Guardian Killer are supported by a zBarb pulling Elites and grouping monsters together so that their team can hit many targets at once. On top of that, the Barb provides massive toughness buffs with Ignore Pain Mob Rule and War Cry. Additional offensive and defensive buffs are provided by the zDH.

Gameplay zBarb
The standard zBarb play around the Trash Killer's Convention of Elements rotation, aggros and pulls monsters with Ancient Spear Rage Flip and pixels enemies with Sanctified Whirlwind.

Gameplay zDH
During DPS windows, make sure you apply all your buffs/debuffs properly (Multishot every 3 seconds, spread out Guardian Turret and spam Entangling Shot or Strafe). Try to help out the group in other ways, e.g. breaking walls with Bottomless Potion of Kulle-Aid, taking Wormholes that might spawn in dangerous places, etc. Especially on large pulls, make sure you re-apply Entangling Shot often and early enough.