PoB: https://pobb.in/_BEj906FdEyV

Copy and paste the link in PoB to import

Build Explanation:

This build uses RF as its main damage source and incinerate as its second damage source, since RF doesnt require your input to deal damage that enables the use of
a side skill to do extra damage. We also use a staff and not sceptres or shields. We socket our RF in our body armour and socket our incinerate in the staff.
I will get into more detail in items section but the reason for this setup is, getting levels for RF from body armor modifiers such as influence and delve gem level mods
and more levels from staff global gem level mods, getting about the same numbers without the need to craft expensive RF helmets. With the recent chieftain change,
great amount of our damage comes from being stationary, incinerate is a channeling skill that
lets us do just that. We don't deal damage through hits of incinerate tho, we use the 8th stage release wave ignite damage which is almost half the damage of our
main skill, RF. We channel it, release it, reposition our character, dodge attacks and apply it again. We use scorching ray as totem to gain the great amount of
exposure it applies to monsters. And yes it does apply its exposure even when it is used by a totem. We use the classic auras, determination for defence, malevolence
and skitterbots for damage and last but not least, purity of fire for that juicy all max res. With the new chieftain change modifiers to maximum fire resistance also
apply to cold and lightning so purity of fire is easy +4 to 6 all max resistance depending on gem level and aura effect you have. As movement skill we use flame dash.
We use infernal cry to apply covered in ash debuff to bosses and explode packs of monsters with ease. Flammmability is the obvious curse of choice. And Molten shell
on cwdt for extra surviveabilty and vms as a great panic button.
We get our freeze chill immunity from our BiS helmet Hrimnor's Resolve, ignite immunity from ascendancy and shock immunity from pantheon + ring craft.
Now, we are not immune to shock fully but we reduce its effect by at least 100% which is immune in most cases and tiniest amount of shock in other rare cases where
monsters can have increased effect of shock.