You are a Humanoid.

You do not need to eat physical food like most other races, instead you gain sustenance from the emotions of other creatures around you and thusly are parasitic by definition.,

The emotion fed off by a clown varies from each individual, some clowns prefer the taste of the melancholic and dour, others perhaps joyous smiles or rage filled anger. Though there are at times some who prefer when the emotions they feed upon is naught but only fear and terror.

You have proficiency in the Acrobatics, Intimidation or Performance Skill.

As a bonus action you can create a magical balloon animal that you control (no action required), when you make the balloon animal you can either fill it with Joyous Laughter or Toxic Vitriol. The balloon animal is a small construct that has 1 HP, 1 HP, 1 in all stats and has a 40-foot flying speed; the balloon animal shares the same initiative as you and takes its turn after yours at the start of your next turn.

On its turn the balloon animal can only move, take the dodge action or pop itself, dealing one damage to itself and releasing the gas that you had initially filled into the balloon to all creatures within five feet of the balloon animal.

When a balloon animal filled with Joyous Laughter is popped, all creatures within five feet of the balloon animal regain a number of hit points equal to half of your level [rounded down] times your proficiency modifier.

When a balloon animal filled with Toxic Vitriol is popped, all creatures within five feet of the balloon animal must make a Wisdom Saving Throw against a DC equal to 8 + Your Charisma modifier + Your Proficiency modifier. On a failure the creature takes thunder damage equal to your level [rounded down] times your proficiency modifier and is frightened until the end of their next turn. On a success the creature only takes half the poison damage and is not frightened.

You are immune to the effects of your balloon animals; if the balloon animal has not been popped after a minute it loses all magical effects and becomes a tiny mundane object.

You may use this feature a number of times equal to half of your proficiency modifier.

When a clown reaches maturity, they must undertake the needed ritual to paint their clown egg and register it with the clown-based authorities of that plane, however that really unrelated as these are the lineages of clown species. There could have been more but alas for sake of game balance I only give three.

When you reach character levels 3 and 5, you learn a higher-level spell, as shown on the table. You always have that spell prepared. You can cast it once without a spell slot, and you regain the ability to cast it in that way when you finish a Long Rest. You can also cast the spell using any spell slots you have of the appropriate level. Charisma is your spellcasting ability for the spells you cast with this trait.