Help action: can/must you specify which ally is helped?

Oh no! If you are blinded you can’t cast the spell that cures blindness on yourself!

Passive Investigation: Could replace Passive Perception?

When averting one’s gaze from a basilisk, are characters blinded or…

Vampire turns into Mist, can it be dispelled?

Is the fog from Fog Cloud magical for the purposes of detect magic?

So “Aid” and an effect that granted “Temporary HP” would stack since…