Invisibility. The sprite magically turns invisible until it attacks or casts a spell, or until its concentration ends (as if concentrating on a spell). Any equipment the sprite wears or carries is invisible with it.
Longsword. Melee Weapon Attack: +2 to hit, reach 5 ft., one target.
Hit: 1 slashing damage.
Shortbow. Ranged Weapon Attack: +6 to hit, range 40/160 ft., one target.
Hit: 1 piercing damage, and the target must succeed on a DC 10 Constitution saving throw or become poisoned for 1 minute. If its saving throw result is 5 or lower, the poisoned target falls unconscious for the same duration, or until it takes damage or another creature takes an action to shake it awake.
Heart Sight. The sprite touches a creature and magically knows the creature's current emotional state. If the target fails a DC 10 Charisma saving throw, the sprite also knows the creature's alignment. Celestials, fiends, and undead automatically fail the saving throw.
Magic Resistance. The slaad has advantage on saving throws against spells and other magical effects.
Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target.
Hit: 4 (1d4 + 2) piercing damage.