Oh, an Ezreal support

Ezreal's W isn't an excuse to run him as Support. But I'm sure it was used.

Technically anyone can support if you buy support items and know what the hell you are doing. This also involves communication with the Bot laner so they can adjust accordingly. I've been with too many bot laners who just go ham regardless of who they're paired with and then lose their minds when they die because they were too aggressive, and this occurs when playing legit supports too.