Boom!
Thor teleported away from Black Rock's line of sight before he suddenly appeared next to him, and it was right then that Black Rock's AoE magic was completely charged up.
"Gravity Dimension!"
However, Thor had also prepared his hand and flung a Magic Scroll at Black Rock, almost at the same time Gravity Dimension landed with its immensely intense force.
"Thor's Arrow!"
It was an upgraded version of Thunderslash and a barrage of triple Tier 5 magic attacks, which Thor had charged up earlier. But the attack had been blocked by Black Rock.
Even though it was called an "arrow", the magic attack was as huge and thick as a bucket. It fell from the sky and engulfed Black Rock in a blinding flash of lightning.
In the meantime, Thor's Defense Shield had been pressed vigorously by Black Rock's Gravity Dimension. Half of his shield's durability took a hit.