Talk:Diana/@comment-26203093-20160720075151/@comment-26203093-20160721091541

Zone-ability and safety in lane as a weakness, and mass disruption in teamfights as a strength, usually. Vanguards are usually not support due to being mostly effective against larger numbers than two, but some effectively are that role, but against lower numbers. Leona is an engager, despite her important aoe's being tiny as hell, she's bordering to a diver atm after the changes, due to dealing more damage over time to single targets, than bursting more. And her resistance boost lets her deal with the early game. Nautilus is much the same, with a shield for the early game too.

Wardens protect the back, Vanguards engage the front.

But it's not what decides whether or not they are support. Poppy seems stuck between roles to me. She's got a peel ult, and her W stops dashes, which makes her best at stopping assassins. Which places her in the back as a warden. But her sheer tankability, and damage with Q puts her in the middles of the enemies.