imo miasma is the best, because you have the tools to deal with armor in your acid weapon, and shields with your electric weapon, just leaving things with tons of hp, which miasma deals with. that it also scales really well is just icing on top of the cake.

Explosive for Ao Bai is nuts seeing as he has an entire tree dedicated to boosting explosive damage.

Excynic is right, Miasma is the strongest fusion in the game at the moment because its set by the enemies maximum health, which means its damage expands, where explosion only doubles the damage, if you proc explosion with a low damage weapon, you get a medium damage explosion, if you proc miasma with a low damage weapon, a chunk of that enemies HP is going down.

Side bar: Jacobella is pulling information from the sky, there's no way to triple element a weapon, the closest possible triples would be dual wielding a dual fang and shock based weapon, or using the crown princes grenades with shock/flame combo. But that only gives you alternating elements in one case, and one of them isn't a weapon in the other.

Finally: @Zgar Explosion element, and explosion non-element are two different procs, Aoi Bai's explosive tree doesn't do anything with it.

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your tellng me THERES FUSIONS WHAT

You can also use weapons with the Gemini Inscription that shares damage types to make two- and even three-element in a single weapon

I find it abit weird that this guide was posted litteraly 20 mins after I posted my thread about elemental combinations, talking about the 3 different combos available. I don't believe in coincidence so I'll just ignore how copy & paste-y this guide is compared to my own thread.

Now back ontopic. I completely disagree to your 2 statements about how Explosion damage deals "massive" damage in an AoE, and how Miasma shreds normal health but does little to shields/armor. Having played the game for a good 20+ hours total ( level 74 right now ) and having beaten both normal and elite modes multiple times I feel I've got a good handle on the current game mechanics.

Miasma, as of right now, is THE single strongest mechanic in the game to killing things UNTIL rng kicks in and you get a good specific build going, and even then you need some really insane luck to top the damage that Miasma can do.

Does Aoi Bai's detonation tree (increased explosive damage) affect the explosion from the element combination? Or is it only referring to weapons that are naturally explosive. Anyone know?

Miasma can also stack multiple times, dealing lots of damage if stacked up.
The number at the symbols' bottom right corner indicates the number of stacks.

With Manipulation, I've had a few bowman run up to their comrades and hit them with their bow instead of shooting at them. Barely damaged them, but took some pressure off me, especially when confusing lobsters and white sharks.

As for Explosion, the enemies hit from it do also flinch back sometimes, essentially stunning them for a second or two.

Additional info: the enemy needs both effects triggered on them. Damaging a decaying enemy with fire will not detonate them right away, only if both effects come together.

If two effects get combined, their original parts get removed, so don't expect enemies to be both decaying and burning, as it only causes an explosion.

Thanks for noting the effects in a guide. Would love to see it expand. : )