1. Slot Affix Eligibility & Stat Roll Percentile Calculation
Rare items roll up to 6 affixes (3 prefixes and 3 suffixes; 4 total on Rare Jewels), while Crafted items combine fixed recipe mods with up to 4 random affixes. Our engine computes each stat's roll perfection against the exact slot maximum and applies synergy multipliers for high-demand combinations such as +2 Skills + 20% FCR + Strength/Life + All Resistances.