An acupuncture session

Yup...definitely acupuncture

It looks like he’s being tortured. But the expression on Benedict Cumberbatch’s face is hilarious.

It's an illusion that Ebony Maw made Doctor Strange Perceive that he was being surrounded by so spikes throughout his body!

He’s being tortured

Like Thor was being

i agree with @Ethan

He will die 100% because they have to have some death heroes, so haters wint be like a noone dies boring so unreal, they are unkillable.

Maybe Ebony Maw is making him relive the time when he had spikes in his hands after the car crash