Uhm... A successful save throw? Or someone has disabled the anti-magic field generator?

Heroes are coming!

Her staff only started glowing in the 2nd panel and then the field vanished.

Perhaps her staff is a connection back to the wizard king and well if so they just goofed

@Illyia Nah it's been glowing before he's just hiding the sparks with his foot

Wait, who's that behind the kid? It looks like a giant man made of ice.

@Illyia It's the same image of the staff. A character is in front of the sparkles. It's looked like this every single time it's been in a panel so far.

@Illyia Sadly, the staff has been sparkling all the time. His foot is simply mostly obscuring it in the first panel. Go back a few pages and see that it's been sparkly the whole time it's been lying there. This is definitely outside intervention from local heroes.

Esper power boost means no more magic in city..

@Illyia

Not so. Her staff was glowing while inside the field throughout https://www.neorice.com/hoh_3871.

There are two persons next to Pablo, who also did "... HUH?", right? Maybe also some persons next to Burk and a person next to Guy? Then the executives can go "... HUH?" next.

@TaranAlvein it's the ice hand. It was there already in 3853 and better visible in 3846 for example.

I think our clawed friend here might be in trouble. I can't say I'm too sad for him, he's far too willing to follow orders that he knows are wrong. He's deluded himself that he's still a good person.

Think it's the snow queen? Given she should have her powers back now.

@Saiko, There's no anti magic field, it was just a force field preventing escape. Piper still had magic but wasn't fast enough to use it.

Looks like she had some sort of contingency protection against assassination. "You would kill me while I'm unarmed", no way she's saying that just because she thinks guilt-tripping or shame-tripping would be effective. That's gotta be the equivalent of "you've just activated my trap card".