Ranger
PathfinderThis is a fast, tanky poison bow build that has amazing clear speed and enormous single-target damage. It is league-startable and can use the 1 Chaos unique 
Slivertongue all the way up to Tier 15 maps.
How This Build Scales Damage:
There are a lot of ways to scale damage with a poison build!
Below is a complete list of all primary damage scaling methods available.
- High physical damage (bow)
- Damage with bow skills (quiver)
- Added physical damage to attacks (quiver/rings/gloves)
- Skill gem levels (skill gems/amulet/bow/quiver)
- Increased poison stacks
- Poison magnitude/Ailment magnitude/Damaging ailment magnitude (all three of these stats are different, and they all stack!)
- Crit chance
- Crit damage bonus
- Poison duration
- Poison deals damage faster
- Shock (increases enemy damage taken)
- Added chaos damage to attacks (rings/bows, very rare)
- Increased attack damage
- Increased physical damage
- Increased projectile damage
Below is a list of mods that don't help with damage, and should not be prioritized.
- Added elemental damage (unless using
Plaguefinger) - Attack speed (feels good, but doesn't add damage)
- Chance to poison (
Poisonburst Arrow, 
Toxic Growth, etc. already have 100%) - Increased chaos damage (only works with direct damage, not poison)
IMPORTANT: Make sure all of your poison skills are set to Weapon Set 2. Poisonburst Arrow uses Rigwald's Ferocity to gain 30% More Damage, which only works in Weapon Set 2.
How to Clear Maps:
Press Poisonburst Arrow. Everything dies. Loot.
How to Kill Bosses:
Cast 
Gas Arrow. Fire Toxic Growth into the gas cloud until it dissipates. Use Gas Arrow again and continue casting Toxic Growth.
To apply a +70% Shock, shoot the boss with 
Stormcaller Arrow, that's it. The shock will last for roughly 30 seconds, which is more than enough to kill any boss.
Leveling:
You can find a leveling setup for this build here: https://mobalytics.gg/poe-2/builds/poisonburst-arrow-pathfinder-leveling
How to Fix Mana:
Get % of Physical Damage Leeched as Mana on rings, gloves, or weapon.
Gain 2% of Mana on Kill on Sapphire Jewels helps, too.
Act Bonuses:
- Act 2: Charm Charges Gained
- Act 3: Stun Threshold
- Act 4: Life Flask
- Intermissions: 15% Global Defences
