Unnatural Selection (2019)

S1E18 A Serpent's Tooth

Disguised as a Babylonian traveler and a Sybill, Discord and Strife present Jason with a seemingly harmless gift that turns out to be a baby monster. Iolaus quickly becomes fond of the creature. However, the trio remains unaware that this adorable little beast has the dangerous ability to incinerate anything that comes into contact with its venom.