Eren's psyche was also branded with an unknown spell in the end. It was the old hag's wretched ability that she had used against him so many times by now.
Life Drain!
Even though Eren referred to the newest addition to his repertoire– Life Drain as a spell, he knew that technically it wasn't one. It was similar to his inherent spell in more ways than one. But he also felt that there was something different about it.
Eren's skin colour returned to normal. But there were still a lot of changes taking place inside his body.
His core that was about to burst had now been stabilized. It also had even stranger runic patterns etched over it now. Compared to the previous runes, the new runes had a different language. Plus, the same runes were visible briefly down his naval region before they sunk into his skin.