[3.21] Tornado Shot Deadeye (Or Ice Shot / Lightning Arrow) - 400% MS, League Start Viable!

Multiple massive buffs, the leveling is made even faster by access to sniper's mark at lvl 4 and faster attacks at lvl 8, onslaught support is now momentum support, which is different but similar. Manaforged arrow + frenzy + ensnaring arrow also boosts the damage substantially if you have the sockets available for them while leveling.

And we get +2 proj from the tree!

Showcase and guide: https://www.youtube.com/watch?v=cptqdbDwz60

Build Update and Bossing Showcase: https://www.youtube.com/watch?v=EyKnS8dhKe8

Crafting +2 ele crit bow: https://www.youtube.com/watch?v=ZZH7gTCyuwg

3.21 Blood aqueduct clear simulation with day1 gear: https://www.youtube.com/watch?v=QvNI135-L-8

Progression PoB: https://pobb.in/hkD7eMyesKld

Endgame PoB: https://pobb.in/IrGX4X0Te0El

Import this link above in Pob and play around with the different trees (at the bottom left, in the tree section) and the different item sets (at the top near the center in items section)

Download Pob + Fork: https://pathofbuilding.community/

Ascendancy: The Deadeye is unrivaled when it comes to Tornado Shot. We get tailwind early for a fast campaign clear

Bandits: Kill all.

Progression:
*Note: refer to Pob for all gems and what level to start using them*

We level as a multi-elemental bow based ranger, I have greatly optimized the Pob to be a very fast leveling experience.
Starting with a self cast Galvanic Arrow and a Galvanic Arrow Ballista setup to supplement the single target.

At level 12, we replace both Galvanic Arrows with Rain of Arrow.
At level 28, we replace the Ballista setup with Artillery Ballista.

We use this setup until we get all our ascendancy points to swap our main skill with Tornado Shot.

In terms of gear progression, during the campaign, just use whatever high dps bow you find on the ground, if you get extra essences, alchemys or bindings, buy a high attack rate bow base from the vendor and use the currency on it until you're happy with what you get.

As soon as you can afford these uniques, absolutely buy them: Prismweave and Karui Ward. They will carry you until red maps no problem and you can equip them at level 25 / 5 respectively.

At act 5 you receive a flask reward, pick the granite flask, soon after you will grab the flask duration and flask effect node, this will tremendously improve your eHP, make sure to press your flasks, we get a lot of power and speed from them.

In early maps, we will want to start looking on trade for either a good elemental DPS bow, or a bow with high base attack rate and a fractured added fire, cold or lightning damage, the higher the better. Then we use an essence of wrath, hatred or anger on our fractured bow until we hit either 3 elemental modifiers or attack speed, and we bench craft the one we're missing.

If done right, this bow will easily carry us into red maps.

After we have a bow with high elemental dps, we can start looking for Kaom's spirit gloves + immortal flesh belt and use berserk on left click.

Playstyle: Depending on our progression, we use galvanic arrow, rain of arrow or tornado shot as our main clearing skill, for tough monsters, we also use our ballista setup.
For moving around, we have high movement speed from the tree and we also use a juiced up blink arrow setup, linked with second wind and faster attack and further boosted by the bow mastery to give it 100% cooldown reduction.

Bow 6L: Tornado shot - Mirage archer - Trinity - Elemental Damage With Attacks - Added Cold Damage - Damage On Full Life

Body Armour 6L: Artillery Ballista - Elemental Damage With Attacks - Elemental Focus - Inspiration - Damage On Full Life - Elemental Penetration

Helmet: Berserk - Grace - Purity Of Elements - Vaal Haste

Boots: Enduring Cry - Second Wind - Blink Arrow - Hydrosphere

Gloves: Cast When Damage Taken - SteelSkin - Sniper's Mark - Mark on hit
*Note: You need 2 separate 2 links for cast when damage taken steel skin and mark on hit sniper's mark. Otherwise, cast when damage taken's mana multiplier will affect sniper's mark, potentially preventing it from triggering.

(put berserk on left click)

Pantheon:
Major God: Arakaali with at least armala
Minor God: Abberath with megaera for exarch altar farming or yugul with varhesh for everything else

Gear:
large cluster jewel with 8 passives; fuel the fight, smite the weak and calamitous
medium cluster with 4 or 5 passives; many notables are good, look for repeater, eye to eye, streamlined and shrieking bolt, with at least one shrieking bolt somewhere so that your totem can taunt. You can also grab a spiked concoction + peak vigour medium cluster for flask effect and sustain

Lethal pride gives a lot of strength + possibly other good stats, get one asap even if it's a bad seed, but half decent ones are usually really cheap. Use PoB to find the decent seeds

Before we remove precise technique and swap to crit, we will need a few items:
Crit bow with high edps (or phys dps if you go heatshiver instead of interrogation)
The interrogation (or heatshiver)
A bunch of crit multi from gear, can be on rings, amulet, quiver and jewels

To remove the enduring mana flask, we will need the helmet implicit with reduced Mana Cost of Attacks as well as the craft non-channeling skills have -7 to total mana cost on both rings. We must make sure that tornado shot cost at least 1 mana so that we gain inspiration charges from inspiration support.

After this, we look for life gained on hit implicit rings, this is a huge source of recovery given how many hits we do per attacks.

If you want to min max further, there are many variations of dmg scaling you can choose from, whether its the omniscience setup, the phys to cold heatshiver setup, the frenzy charge stacking with the raider node from forbidden flame/flesh or the power charge stacking with badge of the brotherhood with the raider node from forbidden flesh/flame.

So many variations! In fact too many to cover all of them in this guide. I have a PoB you can refer to for endgame, which is a power charge stacking heatshiver variant, the variant I believe to be the strongest in the Crucible League.