Yellow Slime (5e Creature)
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Medium ooze, unaligned
Damage Vulnerabilities cold
Charge. If the slime moves at least 20 feet straight toward a target and then hits it with a pseudopod attack on the same turn, the target takes an extra 4 (1d8) bludgeoning damage.
Slippery. The slime has advantage on ability checks and saving throws made to escape a grapple.
Pseudopod. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) acid damage.
A simple, gelatinous creature that swallows anything and everything whole. It takes a long time to digest anything. Yellow slimes are stronger than purple slimes, and among the largest normally-occurring slimes. They live in underground caverns, although they tend to stay near the surface.
Ooze Nature. A yellow slime doesn't require sleep.