The drop in temperature was not slow or gradual, rather it was so sudden it completely caught me of guard. Now what I was about to do should normal not last, based on the description of the skill, it would only last indefinitely if there was an altar. Now I really don't get what an altar is important, but the Trident city had an altar, so that should more than cover for it. I gripped the staff tightly as I turned to Darke and said to him.
"Darke move us at least ten kilometers away from the city's current vicinity. The rest of you should hold on tightly." I said to them as the ship began to move.
As I've found out, usage of the trident was based mainly on visualization. Being able to envision the change you wanted, and focusing on it until it was made a reality. Ice began to cover the surface of the ocean, it was thick and moved rapidly that in seconds a kilometer of the ocean had already turned I to a carpet of ice.