The Multicoloured Gods of Death
During Mallacht's era Yveltal came in all sorts of colours. Each colour representing the kind of death that came to a person. They are listed as:
Indigo: The God of Death and Oblivion, this Yveltal came from those who lived an ordinary life and did nothing of note. A death that comes when they least expect it, in sleep, creeping up on you....
Violet: The God of Death and Ego, this Yveltal is personal. The madness that seeps into the mind, corrupts it. Makes them hallucinate and see things. Paranoia and suspicion. This is death of the self, because of the self.
Blue: The God of Death and Destruction, this Yveltal is just ruin incarnation. Anything it touches shall be destroyed. A lone flower shall wither; the love between a pair will suddenly grow cold; the light of day gives way to an empty star. Civilizations lost.
Green: The God of Death and Plagues, this Yveltal spreads sickness. New and old diseases come and go, but not a single person is ever truly healthy. The concept of aging was born from this Yveltal. Immortality taken from the moment of birth and allowing mortals to exist amongst the immortals.
Yellow: The God of Death and Famines, this Yveltal withers food. Makes it scarce. Causing hunger in those nearby, even when there is plenty. Real or artificial, food seems like it is never enough. Many die, while surrounded by bounty, starving themselves out of useless necessity.
Orange: The God of Death and Pestilence, this Yveltal brings with it swarms that will destroy all in their wake. Causing untold harm to everyone around. Working with the other deaths, pestilence is a relentless, harmful death that refuses to leave.
Red: The God of Death and War, this Yveltal heralds conflicts. Wrath, anger running rampant and peoples never seeing eye to eye. The world would be in constant battle wherever this Yveltal flies.
People were of course distrustful of Yveltal and hunted down the nests until extinction, until, in the end, one lone egg was saved, thus dooming the world at large to its ultimate fate of eternal conflict. Had humanity left well enough alone, they would have still needed to endure death, but it would have been in equal, fair amounts. But due to the hunting of divinity to selfishly stay themselves an awful fate, now they are doomed to war after war after war. Such was their choice and consequences of their actions.