User blog comment:Deshiba/Mana Items./@comment-24946635-20140921162434/@comment-24946635-20140921171856

Traditional support doesn't have normally have damage, true. But I've seen Annie support, Anivia support, Jarvan support ... Even if we're talking traditional, I'd still like more damage to contribute. Anything extra I can add is something good for the team.

Even a few of the more traditional support/tanks have some serious damage potential. Leona in particular can really chunk people if she lands a full combo and her passive get proc'd. Lvl 18 it's 1550 magic + 190% AP + 327 physical (one AA while they're stunned from ult plus the double AA from Q's reset). And they're stunned for 2.75 seconds. If you have an Iceborn Gauntlet as your only offensive item, then your total burst potential is 1550 + 190% * 30  magic and 327 + 272 (2 iceborn procs) physical for a total of 1607 magic and 599 physical damage. 2206 total damage is halfway-decent, imo, and I'd love to see that number go up.