Rytorium is an element with properties opposite to Jorium.
Unlike its counterpart, this mineral disrupts psionic energies (One Piece: Seastone). The more powerful the psychic source, the greater the feedback. In a concentrated state, Rytorium can be poisonous to unshielded Protoss (DC Comics: Kryptonite). When the Zerg tried to imbibe some into their genome, the resulting strains became rampant and impossible to link with via the hive mind. As such, they were eradicated at a distance.