One possibility could be that Draco uses his ice powers to protect his friends. In the fanfiction world, he might be in a situation where his friends are in danger from some sort of fire - based threat. His ice powers would come in handy to extinguish the flames and keep everyone safe.
His character might become more reserved. Since ice is often associated with coldness, he could start to distance himself from others, afraid that his new powers might accidentally harm them.
He could start by simple things like creating ice cubes at will. Then progress to making small ice sculptures, which could later grow into larger and more complex ones. Eventually, he could learn to create ice storms or even entire ice landscapes.
His powers might develop through intense emotional experiences. For instance, if he witnesses a great tragedy, it could trigger a latent power within him.
In some fanfiction, Draco's special powers might be related to mind - reading. He could use this power to outwit his enemies within the wizarding world. For example, he discovers a plot against his family by reading the minds of those involved and then takes steps to prevent it. This could lead to a whole new set of alliances and rivalries as other characters react to his new - found ability.
One interesting Naruto ice powers fanfiction could involve Sasuke somehow obtaining ice powers. Maybe through a forbidden jutsu experiment gone wrong, he now has the ability to create ice sculptures that can also be used as weapons. For example, he could make ice shurikens that are much more powerful than the normal ones and have a freezing effect on the opponent.
One idea could be that Percy discovers his ice powers during a dangerous mission. Maybe he's in a really hot and hostile environment, like a volcanic area, and suddenly his ice powers emerge to cool things down and save his friends. Another could be that he has to train with an ancient ice spirit to control his new powers. The spirit could be really strict and Percy has to learn discipline along with mastering his ice abilities.
A Danny Phantom ice powers fanfiction could explore how his friends react to his new power. Sam and Tucker might be both amazed and a bit worried. They could help Danny test his powers in a safe environment, like an abandoned warehouse. And Danny might use his ice powers to create cool (pun intended) sculptures for fun, but also discovers that the power has a deeper connection to his family's ghostly heritage.
There could be a fanfiction where a character with ice powers is actually an enemy in the Percy Jackson world. They are trying to freeze over all the water sources, which would be a huge threat to the demigods. Percy and his friends have to figure out how to stop this ice - powered foe. They might discover that the only way is to find a way to combine fire and water powers in a unique way, like using the heat from Hephaestus - forged weapons along with Percy's water control to melt the ice and defeat the enemy.
In Miraculous Ladybug fanfiction, ice powers can add a whole new dimension. They might be given to a new character, perhaps a villain. For example, a character with ice powers could freeze Paris, creating a unique and challenging situation for Ladybug and Chat Noir to overcome. It could also be a power that a Miraculous holder temporarily gains, leading to interesting plot twists.