How does Molten Burst interact with things like Melee & Projectile Passives?

Molten Burst, the skill that procs from the axe Ngamahu's Flame, is a projectile area of effect attack. But it comes from a melee attack.

Do these projectiles each have their own crit chance?

Do they all crit when the melee attack that creates them crits?

Will melee crit chance passives increase the chance of the projectiles critting by proxy?

Is projectile crit chance completely useless in this context?

Any additional information you can think of on the topic would be helpful as well.

Thanks in advance & happy league start!

1. No. Either all of them crit, or none of them do.
2. No. They are a seperate skill. The melee skill you use to trigger molten burst is in no way linked to molten burst.
3. No. The projectiles don't deal melee damage, but projectile damage.
4. No. projectile crit chance will increase the chance that molten burst will crit. It will do nothing for the melee skill triggering them though.

Molten strike is a very similar skill and shares alot of quirks with the melee skill + molten burst combo. Even if it seems to be one skill, the melee hit and the projectiles have their own stats, own crit chance, own "tags". If you are going to do a molten burst/strike build, you are building a projectile build, not a melee build.