Bar setup is usually quite unflexible for most content. It'll usually look like this:



Depending on whether you got a vMA staff, you usually swap Elemental blockade or flames of oblivion to the front bar, swap Rearming trap out for chains, deep breath, harness magicka... depending on what content you're tackling.

Cool trick to apply for AoE situation: using a lightning staff on your back bar works with Molten armaments, so it's extremely easy to sustain your AoE damage. Drop Elemental blockade, Eruption and Engulfing flames, and hold heavy attack to zap the mobs!

Gear setups depends on what's available to you:

Usual 4-men group / nTrial with low Warhorn uptime / inconsistent Elemental drain / Siphon spirit
2x Valkyn Skoria
5x Julianos
3x Willpower
1x Inferno sharpened staff (any set)
1x Lightning/Inferno sharpened staff (any set)

if you have access to Maelstrom staves, only replace one of your staves, the other should have spell power / weapon damage enchant.

If you have Infallible Aether (IA) or Moondancer, you can replace Willpower and one of your staves.
If you run in a group with Elemental Drain / Siphon spirit, or just do content with very short fights, you might manage to sustain Kena.

Special "I run in a badass group with lotz of warhorn and Ele drain / Siphon spirit always up"
2x Molag Kena
5x Twice Born Star (TBS)
3x Infallible Aether jewelry
1x Inferno sharpened IA staff w/ spell power enchant
1x Sharpened Maelstrom staff (lightning for AoE, fire for more single target)

There are many more gear setups possible, such as 3 Willpower, 3 Infallible Aether, maelstrom staff back bar and just about any 5p piece set (Julianos, TBS, Scathing...). It might even be possible to use a setup with a Master staff and flame clench. There might be a few good ones coming with One tamriel as well.

As far as the rest goes:

• Max health / max magicka food
• Thief mundus. Use Shadow as well if rocking TBS.
• Divines on armor pieces, Infused for large ones as an alternative
• Max magicka enchants on armor
• 5 light / 1 medium / 1 heavy for more survivability and damage, 7 light for more sustain
• Spell power enchants on Jewelry

More information available on Tamriel foundry:
Kindling power
Nos' mixed staves
No maelstrom setup