Para-Elemental Plane of Ooze

The Plane of Ooze is a vast, stinking swamp without a dry place in sight. There is no sky, only a dim, greenish-gray miasma that hangs above the endless bog, casting a sickly light over a realm of murky puddles, quagmires, and sinking peatlands. The terrain shifts constantly as heavy sludge slides into deeper pools, and viscous ooze burps up from below, carrying noxious gases and the remains of things long digested.

Gnarled mangroves, sickly moss, and fungus-choked vines grow in tangled thickets, their roots half-rotted in the muck. Carnivorous plants and slime-draped trees grasp at anything that moves, and even the air is thick with spores and stinging mist. The very environment seems designed to bog down, ensnare, and consume.

The hazards are as much psychological as physical. Movement is a struggle, as the muck pulls at legs and hooves, weapons rust quickly in the ever-dampness, and spells go awry amid the murk. Travelers risk drowning in sludge, suffocating in slime, or being digested by the terrain itself. Pools of acidic ooze dissolve even magical armor, and dense fogs filled with anaesthetic spores can lull explorers into a fatal sleep.

Perhaps most dangerous is the slow but overwhelming lethargy that settles over intruders. Time seems to stretch, urgency slips away, and many travelers succumb not to monsters, but to complacency and despair, sinking silently into the mire.

The plane teems with slimes, oozes, puddings, and gelatinous horrors, including enormous primordial sludge-beasts that slither unseen beneath the muck. The demon lord Juiblex, the Faceless Lord, is sometimes believed to have influence here, or at least kinship with its native beings.

Sentient creatures are rare but not unknown—amphibious hermits, swamp spirits, and bog-touched elementalists eke out lives in strange, sponge-like structures or tree-crowned isles, often maddened by isolation and the plane’s slow devouring nature.