Cold Water in Crevasse - Ice Caves

By analogy with how Potential Sulfur applies the Nausea effect when in the water, you need to make sure that when the player falls into the Crevasse, there is a block in the water that would make this water cold by applying the Freezing effect.

This feature will not make the biome too complicated, but will simply complement its cold theme and motivate the player to look more at the ground.

This is the last missing detail for ice caves, which feels incomplete, because even if the player gets sick from the water in sulfur caves, it is logical to expect that in ice caves the player will freeze in the water.