Losing thunder is ~7.5% dps loss.

It certainly hurts, to be sure, but it does not mean summoners are losing everything.

I am all aboard the "SE, what were you thinking about making mana an actual resource for dps, make tri-disaster not cost an arm and a leg to cast".

Also, lolol, blizz 2 > tri disaster.

There must be some sort of joke here.