Perfect Storm | D4 Druid Key Passive

Perfect Storm is a Druid Key Passive with the following effect (simplified):
Storm Skills that you cast grant 1 Spirit and deal 15% increased damage when damaging a Vulnerable, Immobilized, or Slowed enemy.

Once you select Perfect Storm as your Key Passive, you can't select any other Druid Key Passive. They're considered to be very important parts of your build, so it merits quite a bit of possible discussion.

How best to use Perfect Storm

Basically this segment will be giving you a rundown on the basics on the "WHEN, HOW, and WHY" of the Perfect Storm Key Passive.

Questions we would answer here would be like:
How to use Perfect Storm, as a baseline.
Why you would choose Perfect Storm over other Key Passives.
When would you consider Perfect Storm? As a build-around? An "augmentation"?

Perfect Storm Core Synergies

TBA: When choosing Perfect Storm, are there "absolute godtier" level synergies you essentially NEED to take?

Related Links & Other Information

Still got a lot to do, a lot of data to track, and how best to present it! Post-launch will clarify alot of this for us!

In the meantime, Related Links:

• If you're here, you're probably looking for some info on the Druid Class.
• Related Skill Tree Nodes: Perfect Storm
• Summary of all D4 Build and Character Customization Systems.