Awakening Daniel Fang's War Rune wasn't more difficult. All Danny's body required was to absorb enough origin energy to form an Energy Pillar. The excessive energy would be absorbed into the Energy Pillar, slowly forming the War Rune with a little bit help from a small object.
Selena didn't explain what that object could do, but Michael wasn't interested enough to question her either. He was more concerned about his brother's well-being. Danny was having difficulty when Selena's origin energy entered him first. His energy paths were still new and had never been used. Stretching them by channeling highly potent origin energy through them was an overkill.
Fortunately, Daniel didn't sustain any injuries. His War Rune formed in less than one hour, conjuring the first Runic Gate along as well. It jumped into existence seconds after the War Rune was etched into his existence. The War Rune formed on the back of his right hand, where it shimmered faintly.