I'm stillness to the game but in my short time I've run into far too many " coincidences"

I've drawn 4 different lizardmen at least 3 times. And yes that 4 includes farmable ones which should not be in the draw pool IMO. Oh what's that? Void shard? Well here's the same rare Void champion Mycolis even though 90% of void heroes have not been drawn yet. 

I'm still really enjoying the game but getting Flingers, Runic Warders and Gloril Brutbane repeating is frustrating. 

Pulling multiple copies of rares is actually really common.  Use them as food to upgrade your current champs.  But be careful who you use as food, some are actually useful.  Post your roster and we'll let you know who to keep.

They are food, I've got a good feeder system down. Drawing the same crap heroes with rare resources, especially farmable heroes, is my core issue. Hell, even one of my first draws on epics was a high katun, another free champion. 

2 more ancient shards 2 more farmable champions in war maiden and berserker. Farmable from the same exact level at that. 

Stop using shards when there are no events, buddy.