Thoron

Thoron (known as Tron in some fan translations) is a powerful Thunder spell from the Fire Emblem series. It serves as a class buster against Dragon tribe Laguz in the Tellius series. In Path of Radiance and Radiant Dawn it is slightly more expensive than its counterpart tomes Bolganone and Tornado in Cost per use, it is stronger than both and lighter than Bolganone.

Fire Emblem: Ankoku Ryū to Hikari no Tsurugi

 * Uses: 21
 * Might: 13
 * Hit%: 100
 * Weight: 3
 * Critical Rate: 10
 * Range: 1-2
 * Cost per use: 150
 * Weapon Level: 6

Fire Emblem: Monshō no Nazo

 * Uses: 21
 * Might: 12
 * Hit%: 100
 * Weight: 3
 * Critical Rate: 10
 * Range: 1-2
 * Cost per use: 175
 * Weapon Level: 12

[[File:FE4thoron.gif]]Fire Emblem: Seisen no Keifu

 * Uses: 50
 * Might: 20
 * Hit%: 70
 * Weight: 7
 * Range: 1-2
 * Cost per use: 240
 * Weapon Rank: A

[[File:FE5thoron.png]]Fire Emblem: Thracia 776

 * Uses: 10
 * Might: 18
 * Hit%: 70
 * Weight: 9
 * Critical Rate: 20
 * Range: 1-2
 * Cost per use: 220
 * Weapon Rank: A

[[File:FE9thoron.gif]]Fire Emblem: Path of Radiance

 * Uses: 20
 * Might: 10
 * Hit%: 85
 * Weight: 7
 * Critical Rate: 5
 * Range: 1-2
 * Cost per use: 110
 * Weapon Rank: A
 * Weapon EXP: 2

[[File:FE10thoron.png]]Fire Emblem: Radiant Dawn

 * Uses: 20
 * Might: 9
 * Hit%: 85
 * Weight: 7
 * Critical Rate: 5
 * Range: 1-2
 * Cost per use: 110
 * Weapon Rank: S
 * Weapon EXP: 2

[[File:FE11thoron.png]]Fire Emblem: Shadow Dragon

 * Uses: 21
 * Might: 13
 * Hit%: 100
 * Weight: 4
 * Critical Rate: 10
 * Range: 1-2
 * Cost per use: 100
 * Weapon Rank: C
 * Weapon EXP: 2

Etymology
Thoron is another name of the atomic radioactive chemical, Radon. It could also be named for the Norse god of Thunder, Thor.