She cast a spell.
她施了一个咒语。

This spell turns humans into frogs. Use it carefully.
这个咒语会把人变成青蛙。请小心使用。

It was not me. I was possessed by an evil spirit.
那不是我。我被一个恶灵附身了。

He disguised himself as a pirate.
他假扮成一个海盗。

You've been granted 3 wishes.
你可以许3个愿望。