My point is that OD is a carry, so you're picking him instead of another carry - if you picked OD, you aren't getting Sylla or AM or Luna or whoever else. As a right-click hero, he requires way too much farm, and he doesn't provide any kind of utility and requires too much farm/XP to be usable as a support.
---------- Post added 2012-12-31 at 03:08 PM ----------
I'm pretty sure OD's aura only restores his mana. I've had my mana restored by a teammate casting something but I've never seen a teammate regain mana for casting near me.
Also Drow is still really OP. First time playing her, had a terrible start, didn't matter. If they don't want to nerf her damage, maybe increase her cast time on Silence or something. It's just so easy to backstab and silence them before they can react and occasionally pop them with a frost arrow while critting for 800 damage with huge attack speed. I guess she's squishy and vulnerable to ganks but she does so much damage, and boosts teammate damage by so much (had a game with a friendly drow where I was hitting for like 120 dmg as Shadow Demon at lvl 5 with barely any items) it seems like you'd be crazy not to instaban her if she went into CM in this state.