Sung-min had the ice attribute. While it looked like an easy attribute to deal with since you could just melt the ice with fire, or wait it out to melt, it was, in fact, a very hard attribute to deal with.
Among the spells Sung-min knew, there was one called 'Endless Frost'. I don't know if he had discovered that spell at this early stage, but if he did, then I'd understand how he was able to hit a high corruption rate so fast.
It was a spell that consumed a lot of soul energy. Or easier to say, it took a lot out of him and could render him unconscious.
And this spell created ice that could not be melted, not even with dragon breath/dragon flames.
The doctor said he had cast a large AOE spell that consumed all the devil beings and monsters coming out of the crack, as well as the crack itself, sealing it off completely.
And then it began to snow black snow.
The snow was mixed with the smoke that had gone into the air from the dragon's attack earlier.