Originally Posted by
matrix123mko
Saronite is from old god and it makes you insane. In reaction with nature magic it creates Emerald Nightmare. Undead are resistant to it.
Azerite, blood of titan, transformed trolls into elves, granting them immortality, immunity to all diseases and immense arcane power. It's highly addictive and withdrawal makes you suspectible to most of diseases.
Kaja'mite is the most mysterious, as we don't know if it is connected to some higher being. This mineral increases intelligence of wildlife around it. Its effects, however, vanish after few generations from being cut of kaja'mite. Zandalari use it for voodoo.