And the energies of the storm merged with his teleportation power, litetrally overpowering and perishing him, as seen in the Comic. (Mata Nui Rises, I think?)
Mutran tried to control the storm, but it was more powerful than his willpower, and got perished by it. Gorast was shoked that Icarax & Krika were right, she didn't even try to escape. Antroz, Vamprah and Chirox were already blinded, they couldn't see where they were gonna teleport, so they were doomed.
And in the Makuta's Guide, Teridax mentions that he sent his most powerful Makuta to Karda Nui to die for they were the ones, who most likely would have attacked him on the same way as he attacked Mata Nui.