This is my combination model for Guurahk, Panrahk, and Lerahk.
Like its component rahkshi, Ru possess the powers of Poison, Disintegration, and Fragmentation. It gains the new power of Entropy, which occurs when it utilizes all of its powers simultaneously. Entropy is a venom that causes the victim decay while expending energy. The venom is non-curable, however Toa have been able to prolong their existence by opting out of utilizing any elemental power.
Idea inspiration for a scorpion Kaita from @Rukah