Metal Slime (5e Creature)
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Medium ooze, unaligned
Damage Resistances acid, cold, fire
Amorphous. The slime can move through a space as narrow as 1 inch wide without squeezing.
Spider Climb. The slime can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.
Slam. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 9 (2d6 + 2) bludgeoning damage.
Sudden Rush. Until the end of the turn, the slime's speed increases by 60 feet and it doesn't provoke opportunity attacks.
Metal slimes are oozes composed of sturdy, silvery metal that gives them a reflective sheen. They are very rare, and they commonly flee battle with surprising speed. Some tales speak of intelligent metal slimes with the ability to speak, while others speak of metal slimes composed mostly or entirely of valuable materials like gold or jewels.
Ooze Nature. A metal slime doesn't require sleep.