Alkaizer Invoker Ice Strike

[DNT] Spell Totem = Tempest Bell #2, you can use two of these if you change Gemcutting Restrictions in "game" menu.

Ice Strike primary damage, giga freeze and stun lock on bosses

Charged Staff buffs and adds some dps, exposure links for debuff works with Combat Frenzy and Resonance on skill tree to generate and maintain charges.

Tempest Bell 2-3x Tempest Bells can be used pretty freely long as you have some unset rings, greatly increasing single target damage.

Grim Feast overcaps energy shield making us extremely tanky, can use Meditate for bosses as substitute on ascendancy.

Ghost Dance provides sustain for energy shield.

Wind Dancer provides evasion and more physical mitigation through ...and Protect me from Harm very good for mitigating big boss physical hits.

Herald of Ice used for clearing can be used with Polcirkeln to have very strong clear.

Shattering Palm used to teleport to distant mobs and setup for big clear with Herald of Ice.