The Ice Alice allows the holder to not only conjure ice, but control the surrounding temperature, lowering it to however cold the holder likes. Nobara Ibaragi has this Alice and is in the Dangerous Ability class. In the Z Invasion Arc, there is an unnamed high school student who attempted to stop Mikan and the others by using his alice, which turned out to be the Ice Alice. It is unknown whether that student is in the Dangerous Ability Class, but it is possible that Nobara's Alice is just dangerously more powerful.