This is one of those cards which is made worse by looking at the flavour text, which reads: They call it stitchers anaesthesia, a spell to deaden the senses while the mad doctors begin their grisly work. That means that this person is not only alive, but about to be butchered and probably sewn onto a bunch of other people to make a Skaab Goliath or something
The five-cost sorcery in White destroys them all, but this time any dork with counters on it survives not just +1/+1, so that's shield or indestructible ones too
If they do, look at that players hand and you may cast a spell from their hand without paying its mana cost
Some previous Gym Leader Challenge rulings here have now been adjusted, as it has been confirmed that Gym Leader Challenge restrictions are followed in the same way
After all, an opponent who reduces your life total low enough can always win with a direct damage spell like Lightning Strike or some other unforseen shenanigans outside of combat damage