Tomebreaker

Tomebreaker is a Skill introduced in Fire Emblem Awakening, it has since appeared in Fire Emblem Fates and Fire Emblem Heroes.

Fire Emblem: Awakening
Hit Rate/Evasion +50 if the enemy is equipped with a Tome.It is Learned by Sorcerers at Level 15.

Fire Emblem Fates
Hit Rate/Evasion +50 if the enemy is equipped with a Tome.It is Learned by Maids and Butlers at level 15 or higher.

R Tomebreaker
user, unit makes a follow-up attack and foe cannot. Cannot be used by Green units. Cost 50 SP
 * Level 1: If unit's HP ≥ 90% in combat against a red tome

user, unit makes a follow-up attack and foe cannot. Cannot be used by Green units. Cost 100 SP
 * Level 2: If unit's HP ≥ 70% in combat against a red tome

user, unit makes a follow-up attack and foe cannot. Cannot be used by Green units. Cost 200 SP
 * Level 3: If unit's HP ≥ 50% in combat against a red tome

G Tomebreaker
user, unit makes a follow-up attack and foe cannot. Cannot be used by Blue units. Cost 50 SP
 * Level 1: If unit's HP ≥ 90% in combat against a green tome

user, unit makes a follow-up attack and foe cannot. Cannot be used by Blue units. Cost 100 SP
 * Level 2: If unit's HP ≥ 70% in combat against a green tome

user, unit makes a follow-up attack and foe cannot. Cannot be used by Blue units. Cost 200 SP
 * Level 3: If unit's HP ≥ 50% in combat against a green tome

B Tomebreaker
user, unit makes a follow-up attack and foe cannot. Cannot be used by Red units. Cost 50 SP
 * Level 1: If unit's HP ≥ 90% in combat against a blue tome

user, unit makes a follow-up attack and foe cannot. Cannot be used by Red units. Cost 100 SP
 * Level 2: If unit's HP ≥ 70% in combat against a blue tome

user, unit makes a follow-up attack and foe cannot. Cannot be used by Red units. Cost 200 SP
 * Level 3: If unit's HP ≥ 50% in combat against a blue tome