This unit has not yet been released to the Global game version. Check out the translation articles (main article Transcended). The information provided on this article will be updated with information currently avaible, but the KR article pages take priority before the GL release.
Recovers HP of an ally and grants healing over time or inflicts silence when attacking an enemy. (No chance mentioned)
Recovers HP of entire allied party by 409% of ATK, grants full Immunity and a buff for 8.4 seconds which further recovers HP by 162% of ATK every 0.5 seconds. When attacked by an enemy while Mercedes is protected (by "Bodyguard"), the enemy wont be able to use skills for 4 seconds (silence). [CD: 21 sec]
Charm of Starlight
Mercedes appoints an ally as a "Bodyguard" to defend her. "Bodyguards" are purified of all debuffs. Recovers the HP of her "Bodyguard" by 332% every second for 12 seconds in addition to reducing received damage by 33%. "Bodyguards" take damage in Mercedes' stead and at the end of its duration their HP is restored. Only one "Bodyguard" can be appointed at a time. [CD: 25.7 sec]
Song of Starlight
Revives 2 dead party members. Those party members are granted all of Mercedes' buffs and suffer no damage for 4 seconds (invulnerability). [CD: 29 sec]
Knight of the Princess
Increases STA by 50% for self and Melee damage by 15% for entire allied party.
Increases Melee damage by 15% for entire allied party and reduces incoming magical damage by 15%.
When Mercedes is unable to fight (Upon her death) purifies all debuffs on entire allied party. Recovers HP by 570% of ATK for entire allied party every 0.5 seconds for 4.5 seconds. Additionally, when received damage exceeds 10% of HP, only 10% of that damage is received. [CD: 31.7 sec]
Blessings of Starlight
"Under Starlight" now increases ATK by 34% and ATK Speed by 46% for entire allied party and "Song of Starlight" is able to revive entire allied party.