User blog comment:Echo 1/Elements You Should Not Give Your Characters/@comment-5072107-20130511215125

Well, I could see some Toa using Dark Energy (*cough*Thode*cough*). That, and there are other species that can manipulate elements.

As for suggestions:

Matter
Matter is what makes up all things physical. You could control anything with this element, making it majorly OP.

Example Scenario
Matter Toa: Witness the power of matter!!

Enemy: *Gets stabbed, strangled, drowned, disemboweled, decapitated, torn apart, burnt, etc all at once*

Matter Toa: That looks painful.

Death
1. Majorly OP. 2 -