I  used  18  anciant  chards,  today .......recieved  3 of  the  same   low  level  rares  and  another  pair  of  low  levels  1  duplicate  epic ,  3  new  rare  (low  level}  and  the  rest  duplicates  of  existing  champions.........the  drawing  has  to  be  fixed .....lol

Every month we get a thread like this :/

As to your OP that this game may cater to those who spend $$$$. I do from time to time  and  my last 3 Legend champions that I summoned over the last couple months have been Dupe Legends

It sucks I agree but whateve I say. I believe a Dupe fix is coming to the game that will offer advantagous options for owning and summoning Dupe legends as stated in interviews with the RAID team on youtube

So I just keep my shards and let them pile up until the next entising event that will give me reason to summon them all together again for the best possible odds...................maybe next time  my luck will change

this is an innate problem with every RNG system.

In theory (and this is completely possible) you could pull 100 Ancients and get 100 of the same champ or pull 100 and get 100 Legos. It is possible but not plausible.

Normally such things dont happen but if enough people are pulling then somebody will pull multiple copies of same champ.

There are players who have one Lego and next pull they get the same Lego again.

This is no trick of Plarium but the mathematical "insanity" of RNG. Thats why the mercy system was necessary because even if very very very small, there is a chance that you could pull a 1000 Ancients and only get Rares! Imagine how you feel if you are the "lucky one"!

I would advice Plarium to further build in mechanics to prevent such disasters from happening. For example, if you pull and you get multiple copies of champs then the consecutive pulls will have less and less chance of pulling this champ (minus percentage of chance to pull). I doubt they would do this though!

math fail...