How to upgrade Familiar stats?

Well…

  • If you meld two familiars which each have 0 rare skills, that results in a familiar with 1 rare skill.
  • If you meld two familiars which each have 1 rare skill, that results in a familiar with 2 rare skills.
  • If you meld two familiars which each have 2 rare skills, that results in a familiar with 3 rare skills.
  • If you meld two familiars which each have 3 rare skills, that results in a familiar with 4 rare skills.
  • If you meld two familiars which each have 4 rare skills, that results in a familiar with 5 rare skills.
  • If you meld two familiars which each have 5 rare skills, that results in a familiar with 6 rare skills.

–==[ EDIT ]==–

Showing an example of the above…

Bonded 2 rare skill familiar, with a 2 rare skill unbonded familiar available…

Choosing to meld the bonded 2 rare skill familiar…

Selecting the unbonded 2 rare skill familiar (note that it indicates you will gain 1 rare skill)…

Melding screen…

Resulting familiar, with 3 rare skills…