Jackalope A5E
CR 3 beast
Tiny beast, chaotic evil
If the jackalope is subjected to an effect that allows it to make a Dexterity saving throw to take only half damage, the jackalope instead takes no damage if it succeeds on the saving throw, and only half damage if it fails.
The jackalope has advantage on Perception checks that rely on hearing.
The jackalope can imitate sounds it hears frequently, such as a simple phrase or an animal noise. Recognizing the sounds as imitation requires a DC 14 Insight check.
Actions
Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 8 (1d8+4) piercing damage. If the jackalope moves at least 20 feet straight towards the target before the attack the attack deals an extra 7 (2d6) piercing damage.
Bonus Actions
The jackalope takes the Disengage or Hide action.
Reactions
When an attacker the jackalope can see hits it with an attack, the jackalope halves the attacks damage against it.
Source: Monstrous Menagerie (EN Publishing) · License: OPEN GAME LICENSE Version 1.0a details