After hearing Irvin's incantation, Old Grindelwald's face immediately filled with terror. He rapidly retreated, trying to evade the Imperius Curse.
But it was already too late. The faint light sank into Old Grindelwald's body, and he froze where he stood. His eyes lost their former clarity, turning clouded as though covered by a grayish-white film.
At the sight of this, Daphne and Mrs. Grindelwald both cried out. Immediately afterward, they swung their wands and unleashed black beams of light.
They were Dark Arts spells with tremendous corrosive power, capable of preventing wounds from being healed by Healing Magic.
Facing those two black beams, Irvin merely waved his left hand indifferently. Two bolts of lightning exploded through the air, utterly annihilating the black beams.
The Power of Lightning inherently suppressed all evil forces, and Dark Arts that required immense malice to cast naturally fell within that category as well.
"Soul Possession! Soul Possession!"
Irvin swung his wand again, releasing two faint Imperius Curses that seized control of Daphne and Mrs. Grindelwald with lightning speed.
Daphne and Mrs. Grindelwald were both less skilled in magic than Old Grindelwald, and they had virtually no combat experience.
After hearing the Imperius Curse incantation, Old Grindelwald had at least known to dodge. But Daphne and Mrs. Grindelwald stood there blankly, defenselessly struck by the curse.
After controlling the three of them with the Imperius Curse, Irvin looked at Old Grindelwald and said calmly, "Mr. Grindelwald, within three days, I want you to transfer all property in Greengrass Manor into Astoria's name, including the assets stored in the Gringotts vaults."
"Additionally, within a week, I want you to hand over actual control of all Grindelwald Family businesses to Astoria and tell her how to contact the people in charge of those businesses."
That was what Irvin