Sam first created a medium that could fuse three normal direct curses. He merged three curses of pain. It didn't take much energy and Sam made three more fused curses just like that. But he didn't use the same curse of pain on it, instead, he used the curse of flesh corrosion, the curse of illusion, and the curse of slumber.
All of them are different curses and effects different parts of the body and mind.
After created four of these curses which are individually formed by merging three same curses, Sam once again created a different medium and merged four of these curses together.
He didn't stop after that, he called for Five elemental King.
"I want you to use your trump card. An attack that could use five elemental energies."
Five elemental king was curious on why Sam wanted to use that attack, but he just nodded and complied.
Sam instantly started curse generation and gestured the five elemental king to attack the dark energy ball.