It is not possible. Such doesn't exist.
heat things
The best super power is obviously the ability to create things from your mind and control the things that you make. Also time freeze is really good but its kind of unfair.
Spells are not real and are only make believe. People can not turn things, move things, change things by spells. The only time this can happen is when the special effects people in movies go to work. Otherwise, magic spells are not real.
making a freeze-wave how can you use nitrogen to freeze things
There are no such things as spells or mermaids in real life. They are simply fantasy.
As a general rule, liquids don't freeze things. But the gas, Liquid Nitrogen, can freeze things.
Mermaid spells don't work because spells, mermaids, and magic are not real. They are things that exist only in fiction.
There are no real mermaid spells. None of them work because there are no such things as magic, spells, or mermaids.
Mermaid spells don't work because spells, mermaids, and magic are not real. They are things that exist only in fiction.
Yes, you can freeze most things
Although these sorts of things do exist, I for one will not tell you what they are. Any practitioner worth their salt will tell you that crafting spells to effect, control or manipulate someone else, particularly without their knowledge or permission is not just unethical, it is inappropriate and unadvised.
In various fantasy settings, "turn things into things" spells, often referred to as transmutation spells, allow wizards to alter the form or substance of objects or creatures. These spells can transform one material into another, change the shape of an object, or even transmute living beings into different forms. Common examples include turning stone into gold or transforming a frog into a prince. Such spells typically require a combination of skill, knowledge, and often rare components to cast successfully.