When it comes to gear, we use
Valako's Vice to convert our Fire damage into Lightning, which helps us proc
Herald of Thunder more consistently for clear.
For weapons, prioritize high flat damage on prefixes and +6 to Attack Skills, Attack Speed on suffixes to smooth out the build. If possible, adding Onslaught on one of the maces as a third suffix greatly improves map clear.
For the rest of the gear, aim for Energy Shield/Evasion, enough attributes to meet requirements, and capped resistances. With more currency, you can start investing into Increased Rarity and extra flat damage on rings.
For charms, start with Freeze/Stun Immunity, and on a higher budget get
Thawing Charm with
The Fall of the Axe and
Rite of Passage Cat/Stag/Wolf options.
On weapon swap, use a Crossbow with high Physical, Fire, or Lightning damage (Fire also converts to Lightning via Valako’s). The goal is to have enough damage to consistently Shock with
Plasma Blast when swapping for bosses.
For Jewels:
Heroic Tragedy - Vorana.
Heart of the Well - With extra damage as on prefixes mostly.
For the rest you can either find a decent
Megalomaniac or just get increased dmg/attack speed/chain from terrain rare jewels.