All of you people need to get it through your thick skulls that "carry" does not mean "afk farming 800gpm Anti-Mage." It just means someone who is given XP and gold priority - your 1, your 2, and probably your 3. That's it. Leshrac can be a "carry." Sand King can be a "carry." Goddamned cunting Crystal Maiden can be a "carry." Role is not defined by anything other than gold and XP priority. How many fucking times do we have to fucking say that?
Abbadon's sole purpose in life is to be a colossal pain in the ass. He can't die, he's more immune to death than Leoric and equally as immune as Dragon Knight. You run up and whack people with Frostmourne and/or Sange and/or Orb of Venom and keep whacking them until they die, all the while giving a free permanent steroid to your team's real damage output and shitting aphotic shield blasts everywhere.
Every spell spent on Abbadon is a spell that isn't being spent on his team, and given that Abbadon CANNOT FUCKING DIE, is a "wasted" spell.
An instant purge versus a 12 second BKB with a 2 second effective cooldown. A heal for fuck all that only hits one target for garbage damage if used as a nuke, versus a heal for 360 that obliterates anything nearby. A move speed slow buff placer on a single target versus a permanent fucking [i]aura[i] that slows move AND attack speeds on everything in range. Personal invulnerability versus invulnerability for all teammates AND creeps in range.
Guess what? Fucking Omniknight is a better support than Abbadon could ever fucking hope to be, and he's still better played as a carry, because your Degen Aura or Frostmoure are doing precisely fuck-all if you're hiding in the back because you have no items and no gold.
Abbadon is at his best when he's up front, being a complete nuisance, and whacking people to death.
Literally the only reason you would ever pick Abbadon over Omniknight is if you can make effective use of Borrowed Time, and support Abbadon CANNOT FUCKING DO THAT.
Who the fuck cares if Dark Seer surges himself away? Guess what? HE'S RUNNING THE FUCK AWAY, BRO. Guess what someone that's RUNNING THE FUCK AWAY isn't doing? Fighting!
They have a tower? Fuck them, ignore the tower, you have death immunity. They have a lot of stuns? Fuck them, your death immunity doesn't give a flying rat fuck about stuns, or silences, or ensnares, or literally fucking anything, because Borrowed Time removes fucking everything, even motherfucking Doom when it activates. They have Axe? Who the fuck cares, Axe has to be level 16 before he can reliably kill you before you get SOME kind of healing off of your ulti, pushing you outside the kill threshold.
Seriously, it's like you don't fucking understand how ridiculously good Borrowed Time is, and how good it lets Abbadon be. People talk about Leoric not caring about dying, but Abbadon cares even less because he CAN'T die unless his team completely abandons him, and even if they do, if you aren't a fucking retard and have built Abbadon as a carry, he'll still probably bring someone down with him, 1v5 or not.
You're talking about Aphotic Shield as if by building Abbadon as a carry, he can't use it on teammates. He can, and he will because Abbadon himself has BORROWED TIME to stay alive with. Did you forget about that whole "When activated, most negative buffs will be removed" thing? BM ult, Magnus ult, BR ult, fucking Doom ult, ALL OF THAT SHIT is REMOVED when it activates, and it activates auto-fucking-matically if you happen to get close to dying, and it costs nothing, AND it has a 40 fucking second cooldown at level 16.
40 seconds. That means every 40 seconds, you can do whatever the fuck you want, utterly free of fear of reprisal, because you are guaranteed to not die. Push when the entire enemy team is missing, who gives a fuck, you can just walk the fuck away and they can't do shit about it, because you can't fucking die.
And consider: what the fuck is little scared bitch Anti-Mage or PL or whoever the fuck is trendy right now, I can't be bothered to give two shits, gonna do when it's 20 minutes in and you're pushing the fuck out of towers because you're motherfucking Abbadon and fucking towers mean nothing to your studly ass? Cry OP? Sure, Anti-Mage is going to fold you like a cheap plastic chair at 45 minutes in, but you aren't going to let the game go to 45 minutes because you're fucking Abbadon and you aren't retarded and you're playing to the hero's strengths rather than his "I'm not actually Omniknight" weaknesses.
Shit, go into his fucking jungle and take it over. What's he gonna do, fight back? Hah! You can't die, remember? But he sure as fuck can if he thinks he can fight you. Shit, even Ursa might not be able to take Abbadon, and Ursa's a better carry than virtually every other trending pick except maybe, like, Alchemist or something.
But where was I? Oh, right - just because you're being a big, manly carry Abbadon doesn't mean you somehow lose the ability to cast your shield on teammates. It has a 6 fucking second cooldown. Who the shit cares, throw it around like crazy. Throw it on yourself when you run in. After the enemy team wastes its shit on you (remember, it's all wasted because YOU CANNOT FUCKING DIE, I can't stress that part enough), the cooldown's up and you can throw it at your teammates or creeps or fucking donkey because, hey, they just used their best shit just trying to keep you from lighting up that asshole Jakiro trying to hide in the back, and anything they have left or coming off cooldown... well, they can let you kill someone, or they can use it on your teammates, get it removed, and let you kill someone anyway.
Stop fucking playing Abbadon as a support. He's a garbage support. If you want him to be a little ward bitch support, at least pick Omniknight because Omni is better at that sort of thing.