Looking for an ADC to support?

I recently just started playing a lot of support, and so far so good. The only problem is that solo q sometimes matches you up with a toxic or boosted adc and it's really no fun. At the moment I play Thresh as my primary, Syndra and Karma as my secondaries.

I'm Silver 5 but I've never played ranked with my supports, so I'm not sure what my supporting level is. I'm looking for an ADC around that level, that I could play with to practice my supporting skills before season 7.

*I can't Skype.