Inherit Skill

Inherit Skill is a gameplay feature in Fire Emblem Heroes which allow Heroes to acquire new skills outside of their base set from other characters. Players choose two heroes in their roster. Hero A will inherit the skills of Hero B. The player is allowed to choose up to three skills from Hero B to be transferred to Hero A. For the most part, skills are free to be transferred at the player's digression. Once the three skills have been chosen, Hero B is removed from the player's roster.

Inheritance Restrictions
The Inheritance restrictions are as follows:
 * All characters can only inherit weapons of their original weapon type. Breath weapons are an exception, as any Breath user can inherit them regardless of color.
 * Several Sword, Lance, Axe, Bow, and Dagger weapons are completely unable to be inherited by characters other than the source character themselves. These are known as Legendary Weapons.
 * Staff users cannot inherit non-staff Assists/Specials and vice-versa. Damage reducing specials can only be inherited by melee characters.
 * Among type-A passives:
 * Any Blow skills along with Life and Death, Triangle Adept, Fury and Heavy Blade cannot be passed down to a staff user.
 * Svalinn Shield, Grani's Shield and Iote's Shield can only be inherited by armored/cavalry/flying units.
 * Close Counter and Distant Counter can only be inherited by 2-range and 1 range units respectively.
 * Colorless units cannot inherit Triangle Adept.
 * Steady Breath can only be passed down to melee infantry and armored units.
 * Among type-B passives:
 * The -breaker skills cannot be passed down to units who have weapon triangle disadvantage against the noted weapon type. Bowbreaker also cannot be passed dow to fliers
 * Wary Fighter can only be passed down to armored units.
 * Poison Strike, Windsweep, Watersweep and Seal (attribute) skills cannot be passed down to staff users.
 * Live to Serve, Wrathful Staff and Dazzling Staff can only be passed down to staff users.
 * Lunge, Knock Back, Hit and Run, and Drag Back cannot be passed down to 2-range units.
 * Cancel Affinity cannot be passed down to any tome or staff users.
 * Shield Pulse can only be passed down to melee infantry and armored units.
 * Among type-C passives:
 * Hone/Fortify/Goad/Ward (unit type) can only be passed down to that unit type.
 * Armor March can only be passed down to armored units.
 * (weapon type) Experience/Valor can only be passed down to units using that weapon type.
 * Infantry Pulse can only be passed down to infantry units.
 * Guidance can only be passed down to fliers.
 * Attack Smoke cannot be passed down to staff users.
 * Savage Blow can be passed down to staff users (unlike Poison Strike), and will stack with Pain.