"It's clear I can't beat you with all this Phoenix stone dust around us. I can't use my dragon abilities along with your divine instinct. I need to use one last gamble of a move" Winter starts to charge up as a pentagram appears behind him along with a red aura; with the ground beginning to crack, it was clear something big was coming.

Meanwhile, back at the manor, "Sir, he's using the Hellstrain and already over a billion!" "Damn it, what's he planning? Anything over 1 trillion, he could do serious damage to himself." Back with Winter and Dire, "your energy keeps shooting higher, quite impressive, but no, wait" Dire's smug smile changed to worry as he worked out Winter's power "it's 900 billion, 950 billion, 999 billion, not it's" "5 TRILLION! HELLSTRAIN TIMES 5 TRILLION!" In the blink of an eye Winter punched Dire sending him flying; the real fight had begun.

Done by  Ian-exe

The Hellstrain is a power used by demons to help in fights to boost all the traits they use in a fight. Still, there is a catch the higher the power, the more pain comes to the body so yeah, a double edge sword, anything above 1 trillion, and you run the risk of brain and heart failure. It's a risk the twins are willing to take.