So here is my idea, it is a fireball that wherever it hits it lights it the ground on fire, but if it hits the player it has a one in three chance to light them on fire.
also it has the same mechanics as a snowball but a custom texture and particles. it is obtained through chests, ender chests, and the mystery chest.
here are the chances of getting it
chest 5%
ender chest 15%
mystery chest 25%
here is the texture if you think it looks bad I can hopefully fix it.
that is all! if you feel the need to say something say it!