Keen Senses. Yssera has advantage on Wisdom (Perception) checks that rely on sight, hearing, or smell.
Magic Resistance. Yssera has advantage on saving throws against spells and other magical effects.
Limited Telepathy. Yssera can magically communicate simple ideas, emotions, and images telepathically with any creature within 100 feet of her that can understand a language.
Familiar. Yssera can serve another creature as a familiar, forming a magic, telepathic bond with that willing companion. While the two are bonded, the companion can sense what the pseudodragon senses as long as they are within 1 mile of each other. While the pseudodragon is within 10 feet of its companion, the companion shares the pseudodragon’s Magic Resistance trait. At any time and for any reason, the pseudodragon can end its service as a familiar, ending the telepathic bond.
Coordinated Strike. When Yserra uses her helpful feature to aid an ally in attacking a creature, that target can be up to 30 feet away, and Yssera can deal an extra 2d6 piercing damage the next time she hits it with an attack before the end of the current turn.
Evasion. If Yssera is subjected to an effect that allows her to make a Dexterity saving throw to take only half damage, she instead takes no damage if she succeeds on the saving throw, and only half damage if she fails.
Bite. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 7 (1d4 + 5) piercing damage.
Sting. Melee Weapon Attack: +9 to hit, reach 5 ft., one creature. Hit: 7 (1d4 + 5) piercing damage, and the target must succeed on a DC 14 Constitution saving throw or become poisoned for 1 hour. If the saving throw fails by 5 or more, the target falls unconscious for the same duration, or until it takes damage or another creature uses an action to shake it awake.