Shadow on the Wall
"So it's perception manipulation," Hao Xuan mused, "For now I can only change my face but the Greater Shadow Beast was not only able to hide its entire body in plain sight but even influence other things that I was seeing. And because it was basically created from my own thoughts it was THAT much harder to discover something had gone wrong."
"Let's just call it what it is then...[Umbra], a mere shadow on the wall."
He looked over at the Death Moss with a glint in his eye. Its entire stem was bubbling and barely holding together from the dozens of lesser cores, "Although it's pretty weak right now I can use the other cores to make it stronger and enhance its effects. Or I can use them to unlock other abilities of various shadow beasts."
*beep*
"Given the current circumstances, the system suggests the first option. It is unknown what kind of abilities the other cores hold and diluting the pool further would not do any good."