This is a very simple build that really doesn't use many buttons. It's a Gas Arrow + Toxic Growth PF.

Toxic Growth is hilariously strong atm. For two reasons: It has good damage and can use good supports.

With this setup, you can use 30% + 30% + 30% + 35% + 40%, which amounts in 315% more damage.

The damage overlaps quite a bit, allowing you to hit the boss with 3 to 5 plants.

For mapping, we use Plague Bearer to pop the plants for fast clear.

Single target, drop the vine, throw down the gas arrow, send some toxic growth and poison the plant while the boss spawns. Then use toxic growth + gas arrow until the boss dies. Replace plant as needed. I can't be assed with the curse, since the build does 1m+ dps without wither or curse. Or the banner, which gives 25% more damage.

As for tankyness, you basically never die unless it's physical dot... Aka Abyss. Those green fat fucks will really ruin your day.

We have 85% Dodge Rate, because the enemy is blinded with +50% effect. If we get hit, Ghost Dance recovers our ES (which should be 1500+). We don't have much life.

As for uniques, just the quiver on Gas Arrow for Weapon Swap blind.

PoB of the build: https://pobb.in/5XfA4ZlCVW5Q

Doing T3 Breach Boss: https://youtu.be/tZNSX_eXVLU