Once an opponent's mental power exceeded his, the effects of all abilities of this type would be greatly diminished.
Ryan was fairly confident in the strength of his own mental power. And the facts proved that his mental power was indeed somewhat stronger than Sara's—but only somewhat!
The human across from him possessed mental power far beyond his expectations! From the very start of the duel, Ryan had gauged Sara's mental strength by releasing the power of his magic stone.
He immediately concluded that he would not be able to recreate the situation from when he had faced Ers Shackle, the "Earthshaking Divine Bull," in this duel.
However, he still held an advantage in mental power, so some other mental attacks would still be effective.
At the start of this duel, he still summoned and activated the Field Card—"Deep Sea Ghost Reef."
As the ground cracked apart layer by layer, black reefs burst from beneath the earth, stabbing into the sky like swords.
An enormous reef rose beneath Ryan Jeremiah's feet.
It lifted him into the air, its front carved with a hideous, terrifying ghostly face.
He stood atop the reef and looked down at his opponent.
The field effect of "Deep Sea Ghost Reef" could further weaken an opponent's mental resistance, strengthening mental Ultimate Moves such as Intimidation.
In addition, it could make the duel arena resemble an underwater environment, allowing Magic Spirits that lived in water to swim through the air.
However, most of Ryan's Magic Spirits did not need this field effect.
After all, in a magic duel, he could not guarantee that he would draw this Field Card in his opening hand. Thus, the Magic Spirits he chose were all types that could move freely on land.
But as he summoned "Deep Sea Ghost Reef," a