First, he didn't exist, until an artifact lied his timeline into being. After a fashion.
Then he was found by an illusionist, who used unique magic to lie him into the main timeline where his disguise became the truth, in return for a promise of assistance.
Then he found out the truth about Aloysius Gullroyal and the terrible universe-warping illusionist he planned to bring into being, so he turned his promise into a lie and hunted him down, claiming the Liar's Gate for himself in the process.
He became The Man Who Lied To Time.
He then lied things into reality in El-Bazril, making them the truth.
Then Hadjbalaum, Devourer of Sinners devoured his ability to lie, making him a true and honest version of himself before Truth was even an element, substituting Life instead.
Caelum didn't let that stop him, and while pursuing that odd version of truth, also found time to learn how to lie once more, better than ever before.
Then he decided just lying to Time wasn't enough, and learned how to control it in truth.
Then he gained the lying power of an Ascendant, becoming able to to make lies a fundamental Base part of reality.
All of this is to say, he owes everything he is and every great advancement he's made to truth and lies in equal measure, especially where the lines blur.
With that in mind, he lies once more.
His greatest lie yet.
Caelum casts Thief God's Mask on himself, changing his Subtype.
Caelum is Level 79.
Caelum can choose to treat Immortal as a Base Subtype.
Caelum is now a Planetary & Immortal.
Caelum is, therefore, now a Deity.
Caelum seeks to turn that lie into truth.
Caelum pulls from Effortlessly Divine (Requires Level 60+ and Deity status).
Thief God's Mask- (Spell, Illusion Magic, Darkness & Illusion, 2,150,000 MP, 215,000,000 Gold) Caster's obtains a non-stacking buff that causes its possessor's stats to be unable to be scanned by entities below Level 80 that are not 20 or more Levels greater than caster, that causes its possessor's stats to be unable to be scanned by entities below Level 60, that causes its possessor to optionally (chosen at the time of the buff's creation) gain any combination of base subtypes (chosen at the time of the buff's creation) instead of or in addition to (chosen at the time of the buff's creation) its possessor's existing subtypes, that provides 80% Dodge, that provides +40% Dodge, that provdies +43,000 AGI, that optionally (chosen at the time of the buff's creation) gives its possessor the subtype Planetary or removes the subtype Planetary from its possessor, Caster must be Level 40 or greater and must possess the ability 'Adept Illusion Magic Attunement' or the ability 'Adept Divine Magic Attunement'
(Ticket from Rosaline)Base Immortal Synchronicity- (Passive Ability, Chronicler of Eternity) Possessor may treat Immortal as a base subtype