Corrosive Ooze

A bubbling, translucent mass that hisses and steams as it slides forward, leaving pitted stone and warped metal in its wake. The ooze shifts between sickly yellows and murky greens, its surface roiling with caustic vapors that sting the eyes and throat. Anything it touches begins to dissolve - leather blackens and curls, iron rusts in seconds, and flesh blisters on contact. The creature seems drawn to metal, perhaps by some primitive chemical hunger.