Crest of the Wandering Star

Crest of the Wandering Star (遊星の紋章, Yūsei no Monshō?)

Rank User(s)
? Sefar, Titan Altera
Another exclusive skill of hers. It is the ability to turn into a giant god in order to destroy civilization, her fundamental design. With this passive skill, the lives, structures, and concepts she destroys are absorbed as Spiritron information and she increases in size. Altera cannot by her own will remove this skill. By absorbing an amount of Magical Energy equal to her current HP amount, her maximum HP doubles. Further, due to her modifier as the Titan, whenever her structure reaches a size double to the previous (16M, 32M, 64M, 128M, 256M, 512M, 1024M) she will advance to the next stage, and all of her parameters are increased by 1 digit. For example, if STR A is equal to a value of 150, and a + doubles that to 300, then with the Titan modifier, what is 300 at first stage, becomes 3,000 at second stage; 30,000 at third stage; and so on, becoming 300,000,000 at her seventh stage. This approaches Gold-Fur White-Face in her nine-tailed form (387,420,489) - an amount of energy on the level of a sun.[1]
  1. ↑
    [v] Fate/EXTELLA material - Encyclopedia: Crest of the Wandering Star [skill], p. 116[T]

    Crest of the Wandering Star
    A skill unique to Titan Altera and the key skill in her character design.
    It allows her to take on a giant form in order to destroy civilization.
    This is a passive skill that allows Altera to absorb the lives, creations, and concepts she destroys as spiritron-information, making her grow even larger. It is not a skill that she can remove of her own volition.
    Her HP increases by an order of magnitude2 when she absorbs the same amount of mana as her current HP.
    When her body reaches a size that is twice as large as her previous proportions (at 16, 32, 64,128, 256, 512, and 1024 meters), all her parameters increase by one level as she transitions to the next part of her titan adjustment.
    (For example, her Strength is A-rank, so if you think of it as 150 points, adding one level at A+ rank would double that number, putting it at 300 points.)
    And if the Titan adjustment is added to that, 300 points at the first stage would become 3,000 at the second stage, 30,000 at the third stage, and so on. At the seventh stage, it would be 300,000,000.
    This is an energy mass on the scale of a star, comparable to the power level of the legendary Golden White Face’s nine-tailed form (387,420,489).
    This is just some extra trivia, but the “Crest of the Star” skill possessed by the Altera in Fate/Grand Order is missing one character.

    李書文【遊星の紋章】
    巨神アルテラの専用スキル。
    文明を破壊するために巨神化する能力。巨神アルテラの基本設計。
    自らの手で破壊した生命、建造物、概念を霊子情報として吸収し、巨大化していくパッシブスキル。アルテラの意思ではこのスキルは外せない。
    自身の現HP数値と同じだけの魔力数値を吸収する事でHP上限が倍化していく。
    また、巨人補正として、前のサイズから一回り大きな構造体（16、32、64、128、256、512、1024M）に到達した時、次の段階に移行したとして全ての能力値の桁が一つあがる。
    （筋力でいいならAは150値と考え、+が一つ入っているので二倍の300。
    これに上記の巨神補正が入ると、第一段階では300だったものが第二段階では3000、第三段階では30000、とあがっていく。第七段階では300000000となる。
    これは金色反面の九尾状態（387420489）に迫る、恒星クラスのエネルギー量である。
    余談ではあるが、『Fate/GO』のアルテラが持つ『星の紋章』は、このスキルが一文字欠けたもの。

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