In chapter 1143 of the manga One Piece, Saint Killingham reveals that he possesses the Ryu Ryu no Mi, Model: Kirin, a type of Zoan fruit that takes the form of a Kirin, a mythical creature that combines elements of a deer and a dragon. His powers are quite formidable, as the creatures he conjures from his imagination can have significant effects on those who are not immune.
However, Saint Killingham’s abilities have some parallels with Luffy’s strength:
1. The Ability to Create Objects from Thin Air

Killingham’s strength allows him to create objects at will. After entering the dream state of his target, he can pull items from their imagination and bring them into reality.
For example, in the case of Saint Sommers in chapter 1143, he conjured salt by entering the dream of his target. Additionally, he previously created a magical item from the imagination of his younger brother.
Similarly, Luffy, in his Nika form, can produce objects such as glass, bouncing balls, or any item from thin air that didn’t exist before.
2. Both Utilize Imagination and Dream States to Source Inspiration

Oda has confirmed that the items Luffy creates from within his Hagoromo (the white robe around his shoulders) are from the “Imagination/Illusion of Nika.”
On the other hand, Killingham creates objects based on the dreams of individuals he enters, meaning that these objects are products of imagination or dreams.
This indicates that both Luffy and Killingham share a common source of immense power, which is the realm of imagination.
3. Both Draw from the Concept of “Dreaming”

Oda has distinctly pointed out that Luffy draws from the dreams of those he encounters.
In chapter 1143, Killingham also extracts an item from the dreams of an individual he has entered.
This suggests that the items sourced from the powers of the evil fruit of Killingham and Luffy are similar, and both can be considered as products of dreams.