Ratatoskr (5e Creature)
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Small monstrosity, neutral evil
Innate Spellcasting. The ratatoskr's spellcasting ability is Charisma (spell save DC 13). It can innately cast the following spells, requiring no material components:
Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 5 (1d4 + 3) piercing damage.
Ratatoskrs are rodent-like creatures with brown or black fur that dash between the planes delivering messages. They don't do this out of any inherent kindness, however, as they demand to learn secrets and libel as payment. To a ratatoskr, nothing is more satisfying than spreading lies and slander, and when they gather in groups, they share the secrets they have learned amongst themselves, casually spreading what they've learned as they travel.