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Cyberball
Cyberball's damage is a direct affect, does not crit, lifesteal, nor do "normal" attack things.
Similarly to the Baby Elephant, the Cyberball's damage dealt is affected by the player's Damage stat -- so a player with 100 Luck and +10% Damage will deal 27.5 damage on a Cyberball trigger (25 base + 2.5).
Item
Cyberball is an in-game item that can be bought from a Shop or can be found in a Crate. Most Items modify the Stats of the player, and some of them provide additional effects.