Entropy is a terrifying creature that defies all logic and order. It is a shapeless mass of chaotic energy that constantly changes its form, color, and texture. It has no discernible features, except for a single, vortex like maw that devours anything that comes in it's way. Entropy is not a living being, but a manifestation of the Elemental Chaos, the primal force that opposes the order of Mechanus. It has no mind, no purpose, and no allegiance, only a hunger for destruction and disorder. It can warp reality around it, creating random effects that defy logic and physics. It's immunities and resistances constantly shift, making it even more unpredictable in combat.
Entropy has the innate ability to cast plane shift at will, without any material components. This allows it to travel across the multiverse, appearing and disappearing in different planes of existence. Entropy does not use this ability to seek out specific destinations or to escape from danger. It simply moves randomly, following its chaotic nature. Entropy does not care where it goes, as long as it can cause destruction and disorder. Whenever Entropy arrives in a new plane, it unleashes its chaotic energy, disrupting the natural laws and creatures of that plane. It does not stay long, however, as it soon grows bored and shifts to another plane. Entropy’s movements are unpredictable and erratic, making it hard to track or anticipate. No one knows where Entropy will appear next, or what havoc it will cause.
Entropy is a highly dangerous and unpredictable foe. It does not communicate or negotiate, but attacks anything that comes near it. It does not have a strategy or a tactic, but relies on its chaos aura and chaos blast to wreak havoc on its enemies. It does not fear death or pain, but enjoys the chaos and suffering it causes. It does not have a lair or a territory, but wanders the world randomly, leaving a trail of devastation behind it. Entropy is a force of nature, a cosmic anomaly, and a threat to all existence.
Entropy does not have a fixed lair, but rather considers any area within 1 mile of its presence as its domain. Wherever it goes, it leaves a trail of chaos and devastation behind. The region containing Entropy’s domain is warped by its presence.
Entropy has never been to Mechanus, the plane of ultimate order and law, where everything operates with clockwork precision and logic. Mechanus is the antithesis of Entropy, and the two forces would react unpredictably if they ever met. No one knows what would happen, but it would probably be very bad. However, for some unknown reason, Entropy has never entered Mechanus, despite its random movements. Some speculate that there is a hidden law or pattern that governs Entropy’s movements, preventing it from reaching Mechanus. Others believe that Mechanus has a powerful defense mechanism that repels Entropy’s chaotic energy. Whatever the reason, the multiverse is safer for it, as the collision between Entropy and Mechanus would be a cosmic catastrophe, threatening the very fabric of reality.
If Entropy is reduced to 0 hit points, it does not die. Instead, it vanishes in a burst of chaotic energy and reappears in a random location in the multiverse after 1d100 × 1d100 days. The location is determined by the DM, or by rolling on the table below. Entropy has no control over where it reappears. Entropy regains all its hit points and abilities when it reappears.