Actually the loot system rng is pretty simple. Upon character creation, you are assigned a randomized set of values. Most games would call this a "Luck" stat. During loot rolls, this value is plugged into the formula and affects the pool choices that give you loot. The game has 3 coins. 1 coin is for glimmer and the other 2 are for items. Heads or tails, yes or no. After flippin the coins and landing on yes, the game rolls a set of dice next. Nothing, white, green, blue, purple, yellow. It rolls each dice 5 times, the average roll is what rarity you get. Then it rolls even more dice to see what item you get, armor or weaon, class, slot and type. The final roll is for the item pool where luck affects the final item.