How is this possible?

He only have 830 hp and i did to him 500k dmg… he killed me lol

He has tons of mana probably that works as his health.

Exactly what he said. Wizard can get Mana Shield off hand weapon. Then you cap the affix known as “glass cannon” which reduces your HP by up to 50% but also increases your damage out out by the same amount. Get lots of crystal affix with mana % and boom, high damage tank. My wizard has 756 hp but his mana is at 375k. Damage reads 256k-350k.

The immortal build probably hahaha

Manashield FTW