I realize that there are not as many Legend/Eternal items as many players would think. most items that drop are for the class you are using. then there are other requirements for these items. only on certain Element Maps, a minimum floor, Epic Monsters or higher, minimum Difficulty Setting, and some have a reduced drop rate, so drop less often than other items.
umm, take a look in the Codex and check the requirements for where/how the Legend/Eternal items can be found. not meeting certain requirements reduces the pool of what you will find, increasing your chances of getting multiples of the same item in each map you do.
a player who REALLY wants Eternal Items needs to get Perks.
Fortunate gives a +200% over cap for Luck, which helps with Eternals dropping.
Treasured gives a +300% boost to finding Eternals.
Hunter spawns +1-3 Epic Shrine Guardians at each Shrine and Pool. some of the more desirable Items only drop from Epic+ monsters. also, Epic+ monsters have a better chance to drop Legend and Eternal Items. some players don’t get this Perk and use the Mythic Hunter Ring instead.
Enshrined gives a second Shrine for those Epic Shrine Guardians to spawn at.
Accomplished allows you to finish Feats faster (requirements reduced by 25%, rounded up). some of these Feats will increase how often you can find/get Eternal items compared to not having this Feat.
Dealer is the only Perk that doesn’t help you get Eternal Items, but if you are converting unneeded Eternal items into Ultra Rare Crystals, then you need this Perk to help get the Gold for converting.
there are other Sets and affixes that can improve Eternal Farming, but just take a look around the Forums to see what others are doing.
@dickwad, @Bwaters130 main concern in the main post was the concern of only finding 1 Eternal that was different from about 19 others being the same in 3 months. that might be a bug. the other concern is increasing the number of Eternals being found, which is something us players can help with by posting or by Bwaters130@ doing a Search on Farming for Eternals.