Master Seals are a currency in Fire Emblem Warriors: Three Hopes used for unit promotion and unlocking more classes for characters. More specifically, this currency allows units to take the certification exam for a Master Class. To use Master Seals, players can head to the Training Grounds in their War Camp and speak with the Training Instructor. This NPC will have various options for enhancing individual characters in Fire Emblem Warriors: Three Hopes, and one of these choices is "Acquire Class."
When acquiring new classes, the protagonist in Fire Emblem Warriors: Three Hopes is shown a list of every character in their roster. Of course, no unit can become every class. Nonetheless, players aiming to increase an individual's capabilities or switch their roles in combat will need to spend a certain number of Master Seals, depending on the promotion rank. For example, Edelgard is a playable character that starts as a Fighter. If players wish to change her into an Emporer, they will need to give the Training Instructor several Master Seals.
This class-changing mechanic is ideal for those looking to not only boost the combat power of their units in Fire Emblem Warriors but also assign their characters to more optimal classes. For instance, Flex's starting class is Myrmidon, but he can achieve his maximum capabilities as a Mercenary in Fire Emblem Warriors: Three Hopes. Of course, not everyone needs to follow the "meta," but having Master Seals for choosing which class better suits a unit is an excellent way to enhance one's gameplay experience.
Farming Master Seals in Fire Emblem Warriors Three Hopes
Before players can earn or use Master Seals for their characters in Fire Emblem Warriors: Three Hopes, they must first reach Chapter 10 of their corresponding story arc. This restriction will still apply to units who've wholly mastered Advanced Classes and are ready to take the certification exam for Master Classes. Therefore, focus on progressing the main campaign to further enhance such units. Once the protagonist has gotten to Chapter 10, Master Seals will become available for purchase from the Item Shopkeeper in Fire Emblem Warriors: Three Hopes. Similar to Intermediate or Advanced Seals, the stock of Master Seals are limited but will resupply at the start of the next chapter.
Other than the Item Shopkeeper, there are three additional ways to get Master Seals in Fire Emblem Warriors. First, players can unlock in-game Achievements and receive Master Seals as a reward from the Rewards Master. Achieving an S Rank in battle stages also grants players several Master Seals in the latter missions of the story. Finally, take the time to investigate Survey Spots for a chance to encounter Traders who will exchange Master Seals for Gold.
Fire Emblem Warriors: Three Hopes is available for the Nintendo Switch.