Sad Dragon was released in the Beta 7.6 update, alongside 13 other cards. Previous Versions can be found here.
Sad Dragon is the 2nd card to gain the Dodge ability (the first being Sans). Since Beta 36.1, Dodge doesn't reset, meaning due to its mere 1 Dodge, it will only negate the first source of DMG it would take. But even that can give a little room for error.
- Out of Order (by Asrite)