link to reddit AMA:
I have not duo queued to climb the ladder
Hi I'm Rxdrugs, I'm not really anyone special, but I'm in the top 9k players on the NA server! I'm about 1850-1900 ELO and I got there by playing support exclusively. I know this isn't really that special but I know a lot of lower ELO support players are curious about if its possible, and I'm here to say it is and how i got there! AMA

I'm just curious, do you play more with aggressive supports like leona, or with passive ones like soraka?

In earlier ELO's I used agressive supports, the higher I got the more passive supports I used becuase AD's actually had brains

Hence my theory about the usefulness of Volibear and similar supports being a digressing line the higher you climb in Elo. In low elo he/they destroy/s faces, but I never see him/them in high elo.