Missing Link (5e Creature)
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Tiny beast, unaligned
Amphibious. The missing link can breathe both air and water.
Primordial Resistance. Due to living in muddy, disgusting pools for many centuries, the missing link has advantage on saving throws against poison.
Slippery. The missing link has advantage on ability checks and saving throws made to escape a grapple.
Bite. Melee Weapon Attack: +1 to hit, reach 5 ft., one creature. Hit: 1 piercing damage.
The missing link, also known as the living fossil, presents the stage between fish and amphibians. In some religions, however, the missing link is a by-product created from leftover parts when fish and amphibians are first created.