if i put my heralds in this, would the explosion of the heralds have 30% additional crit multi?

no, it says socketed attacks

check the tags at the top of each gem to see compatibility

Herald of Ice:
Spell, AoE, Cold, Herald

Blade flurry:
Attack, AoE, Channelling, Melee

change your font would be the first step

ahh it is so simple when u mention the tags at the top of each spell. did not think of that lol.
ty

you're welcome, np

if not, or if yes, i not matter

since the base crit chance of herald is ZERO

You can always use an Inc crit gem, Hatred watchers eyes or Ascandancies to change that.