Summoning oozes are the result of summoning circles gone bad. This ooze has arcane runes carved into its protoplasmic flesh, and can summon creatures to its defense.
Summoning oozes are usually blood red in color. Vaguely translucent, the summoning ooze has arcane runes carved into its flesh, and these runes glow with an otherworldly light. These lights seem to form a bright golden circle within the ooze, from which the ooze is able to summon other creatures.
Summoning oozes can be located in the deep Underdark.