YOU SAID:
You cast Fireball centered on yourself.
INTO JAPANESE
あなたは自分を中心に火の玉をキャストします。
BACK INTO ENGLISH
You will cast a fireball around yourself.
INTO JAPANESE
あなたは自分の周りに火の玉を投げるでしょう。
BACK INTO ENGLISH
You'll throw a fireball around yourself.
INTO JAPANESE
あなたは自分の周りに火の玉を投げるでしょう。
it is unlikely that this phrase will ever reach equilibrium