The opponent realized something is wrong when Sam pointed the Katar at him. The same energy bullet that he has been facing since earlier is being conjured.
It is shot.
He threw the dagger to block it.
*BOOM* The explosion happened, however, he felt a sense of dread that he didn't expect.
*BOOM* *BOOM*
Two explosions, happened on either side. The left one is near him arm, while the right one is near his leg. He lost his balance and crashed to the ground. He didn't know where the attacks came from.
He didn't sense them.
He didn't see them coming.
He didn't even see Sam conjuring the energy to launch those attacks.
At the same time, Sam is currently holding his throbbing forehead with gritted teeth. That move is not exactly lethal and it is definitely not overly poweful.
But it took a lot out of him. Mostly mentally.