Watermelon Warrior

Seed Spitter: 

 Starting at level 3, you can spit watermelon seeds as an attack, which deals 1d6 damage. The seeds have a range of 60/100, and when you make an attack roll with them you add +2 to the result.

Powerful Seeds: 

 Starting at level 7, the seeds deal an extra 1d6, gain 10 feet of range and get +1 to the attack bonus. You gain these again at levels 10, 15 and 18.

Quick Attack: 

 Starting at level 10, if you make an attack with seeds you attack 4 times instead of 3. 

Machine gun: 

 Starting at level 15, if you hit all seed attacks on your turn you can make an extra 2 attacks as a bonus action. 

Sunflower Seeds: 

 Starting at level 18, you instead attack with sunflower seeds. They have all the bonuses above with the addition of dealing 1d6 damage in a 5-foot radius when they hit an enemy and dealing d8s instead of d6s.