Vow of Friendship (友情の誓い Yūjō no Chikai lit. Oath of Friendship in the Japanese version) is the personal Skill of Silas in Fire Emblem Fates.


This skill is only active If Corrin is an ally to Silas and are present on the battlefield. Whenever the Avatar's HP is under half, Silas deals 3 more damage and receives 3 less damage.

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