1, Unholy sanctuary. Lich is good because you can't die during it due to this trait. The trait is just way too strong in general. It is a passive survival trait like the ones that were nerfed to have 300s internal cool downs. But you didn't nerf unholy sanctuary. 2, My suggestion is to give it a 300 second cooldown. Obviously this doesn't fix it for 2v2 but you have to decide if you care about 2v2 balance because you cannot balance for both modes (which makes it strange to have only 2v2 after a huge balance update but nvm). 3, Alternatively you can just reduce the health gain which is OP. Make it gain 1% of health every 3 seconds rather than every second. 4, Then also nerf signet of undeath to have less passive life force gain. And nerf lich autos by about 20-30%. 5, That is it. Necro can now be punished when their death shroud is on cooldown, and doesn't regen a ton of health in death shroud. And tanky necros cannot kill anyone with lich anymore.