Green Slime (5e Creature)
From D&D Wiki
Small ooze, unaligned
Damage Vulnerabilities cold
Charge. If the slime moves at least 15 feet straight toward a target and then hits it with a pseudopod attack on the same turn, the target takes an extra 2 (1d4) bludgeoning damage.
Slippery. The slime has advantage on ability checks and saving throws made to escape a grapple.
Pseudopod. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 3 (1d4 + 1) acid damage.
A simple, gelatinous creature that swallows anything and everything whole. It takes a long time to digest anything. The green slimes are the weakest and most common kind of slime.
Item Chargers. The green slimes sometimes walk above some objects pick them up in the process, when someone defeats a slime with an object inside it they will drop it.
Night Aggression. Unless someone attacks it, the green slime will be peaceful, but if it is encountered in a dark place like a cave or at night it will always attack any human nearby.
Windy Balloon. Some enterprising slimes ride wind currents with balloons in an effort to find food. Pop their balloons to bring them back down to earth.
Ooze Nature. A green slime doesn't require sleep.