More Runes: Underground Castle 2 Rune Blueprint
Runes are different from weapons. Only by exchanging the previous blueprint can the next blueprint appear. At first, only two blueprints with strong armor and strong resistance can be exchanged.
When building equipment in the workshop, choose to add runes, and then add the runes you want to add, so that the equipment will have additional runes.
Skill Rune Blueprint Illustration Name Skill Rune Type Rune Blueprint Attribute Highest Skill Acquisition Method Arena Red Saint Exchange 240 Fragments