Watch them fight
Dice merges the concept of randomized damage (such as Heaven Metronom's Gems) and a weapon that leaves behind a hitbox (such as Distowrecks' Trapper) Dice rolls a stationary die, at which point the damage of that die is determined and will be dealt to an opponent who collides with it. The damage of the die is a random integer between (inclusive) 1 and the number of faces (base number of faces is 4 because 4 is the least amount of sides a fair die can have). Dice can only roll a die if it doesn't have its maximum number of dice on the field; the maximum dice starts at 1. The maximum dice serves a dual purpose; it not only limits the number of dice that Dice can have thrown on the field, but also determines the amount that Dice can scale before having its faces reset to 4, at which point the maximum will increase by 1. Every time an enemy collides with a die, the damage number of the die is added to the faces at a reduced rate (floor[sqrt(x)]). TLDR: dice do randomized damage determined by the number of faces, which increases with each hit, when the maximum number of dice hits is reached, the number of faces is reset and the max hits and max dice on the field increase.