No ranged champs on your team Mission solution.
Riot didn't think this one through I don't think. Im sure they were on the thought process of:
"Get into a premade and play 5 melee champs"
What Riot doesnt realize is the majority of their players are solo/duo queuers, so what this means is we will get random people trying MELEE adc's.
I do think there is some ways around it though.
- Get in a premade.
- Play Anyone with a good all in, and wait for level 6/ganks.

- ARAM. ARAM kinda RNG but possible.
is "melee"
feels kind of mandatory for this, but that's just me. I sure as heck ain't that Yasuo.
IS RANGED CHAMP OR NOT