It was well known that just as no two leaves in the world were exactly alike, no two Planeswalker's Sparks could ever be identical.
Especially a Spark's characteristics—they could confirm someone's identity even more reliably than genes.
After all, genes could at least be copied or cloned, whereas a Spark was usually tightly bound to a Planeswalker's soul. There was simply no possibility of replication.
Moreover, every Spark was unique.
Even the same Planeswalker in different timelines or even parallel universes could not possess a second dormant Spark.
Therefore, using a Spark to verify a Planeswalker's identity was often far more accurate than appearance, fingerprints, irises, genes, or even the soul.
But the problem was that no matter how Nicol Bolas looked at the blue-glowing dragon before him, it did not resemble his dear brother—Ugin.
The reason was simple!
Ugin's entire body was constructed from spiritual energy. Although he could freely shift between physical and incorporeal forms, he would never look as "strange" as the creature before him.
Yes, strange.
As an Elder Dragon Planeswalker, Nicol Bolas could clearly sense that this shell contained no trace of a soul. It was more like an incarnation, projection, clone, or remotely controlled puppet.
But Sparks should not react at all without a soul to drive them.
Yet this "Ugin" could not only wield a Spark, but also use all kinds of Planeswalker abilities at will.
"I admit it, your disguise is remarkably convincing. Even the way you speak is exactly like the real Ugin. But unfortunately, you are not him, much less my brother."
Nicol Bolas stated his judgment in an utterly decisive tone.
"Oh? If I am not Ugin, then who am I?"
The blue-glowing dragon grinned, its expression teasing and amused.
"Hmph! I do not know where you got Ugin's