LogFAQs > #902275636

You can merge two of the exact same character. You choose one version to keep and one version to get rid of. If the version you get rid of is the same rarity or higher, the unit you keep gets a "+1" level. Each "+1" is worth 2 stat points and you can reach a maximum of "+10". So a 5*+10 unit will have 20 more stat points overall than a 5*+0. The stats are distributed evenly so a +10 unit will have 4 more stat points in each stat. When you merge two characters, the character you keep gains all of the skills of the character you lose. Units with "+1" level are also worth more points in the arena. So a top ranking arena team will be made of 5*+10 units.

By exact same character I mean you can merge two "Lyn: Brave Lady" together but you can't merge "Lyn: Brave Lady" and "Lyn: Lady of the Plains" even though both are Lyn.

When I say "same rarity or higher" I mean you can merge a 5* unit into a 4* unit to get a 4*+1 unit. There are actually some cases where you want to do this but it's rare. You can merge a 4* unit into a 5* unit but you won't get a "+1" level. You only get some SP.
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