Unlikely. Vergis is quite a niche champ - he has uses in a few places, but I wouldn't use him in most.

Is there a list somewhere that list champs you want dupes of?

You can search these forums, the question comes up from time to time, but broadly speaking the answer is - it depends on your situation. There's a handful that are more frequently used than others - usually the ones that do max HP damage, since Spider 20 requires at least two of them. So, in that vein, things like Coldheart and Royal Guard are pretty common.