Not crying.  He feeds on your tears!

I want to add to the OP's question:

How do you beat an ooze UB with a monk (any good general can send him one) without 2v1ing him or doing the same thing?

Ooze is a counter to minions, but high level minions also counter UB. If you have alot of high level minions and good auto-attack, you can put a hurt on UB. Let's say for Oak... all minions, spirits, pestilence and SoF. If you catch UB unguarded, he'll drop 2000 life in seconds.

Sedna can also take UB, especially once she has 2+ mana helms and can afford to pounce besides healing. In late game he will beat her though.

Erebus can also take UB, because he can dodge spit with mist, and with stacked minions he does tons of damage.

A proper UB will be using an Orb of Defiance, which is 5 free seconds of Ooze. Stack armor, get the Orb, get nature's reckoning, get post mortem, and you won't have any problems with minions. I hear all of these people say that minions are a counter to UB, but I've never seen it. :/

I've never seen Orb of Defiance used.  It's simply not worth the gold.  4k gold is an INSANE amount.  

I've seen Orb of Defiance on TB and Regs, never on UB though.

you missed some stuff

High level UB should be carrying teleport scrolls, caplocks, and sigils, not totem of revelation.  Orb of defiance thus takes away sigils, as you still ALWAYS need tele and caplocks.

5 seconds of "free" ooze at the cost of being able to do nothing else.  NOTHING else.  No incredibly power auto attack, or spit, or grasp, or diseased claws, or running away.

I've seen orb used effectively on weaker characters (primarily rook.. as he can shield himself in the middle of his towers, his allies can tp in while you think you're getting the kill.. and now you're hurting)

In smaller games where I am pit against a good UB most of the game I can pretty easily hold back a UB until about level 12 by building to counter him.

This is assuming:

- It's a smaller game, the other player on their team is not a Sedna, so I can get Bishops without wasting my gold

- He hasn't been fed (he has been fighting me the whole game, I haven't died)

- We aren't fighting in a creep wave or a lane (XP flag on Cataract is the best place to fight him. Regardless of what character you are).

An Ooze UB in a creep wave is much, much stronger than a Ooze UB not in a creep wave because he will Ooze out all your creeps and then his creeps will all dps onto you. This is about 200 dps assuming catapults hit the table (5 x 17 + 2 x 12 + 2 x 30 + 2 x 40 mitigated).

Since I have been combatting him the entire game, I know whether or not he has Spit. If he does, I will have heal 3 or 4, because Spit-Grasp-Ooze does about 1200 damage in 4 seconds. Healing then summoning my Bishops brings me to full hp and begins the countdown for the Bishops which will come about 3 seconds after the next spit.

If he doesn't, and he's pure Ooze, I still need a few points in heal (perhaps even only 1) and a few points in Pounce. Pounce is an extremely mana-efficient burst (except level 1, which sucks), and every point becomes more and more mana-efficient, as you get 200 damage for 125 mana. I can pounce through his pure Ooze. He will have a few hundred more points of HP, armor, and slightly faster attack speed (assuming he has put a few points in Stats) so he is a bit more of a threat to me than a Hybrid.

I obviously have a Sigil because a sigil'd Sedna with Bishops and Healing Wind is healing about 2000 hp every monk tick. He probably has a Sigil as well. The important thing is not that I now have the upperhand on him or anything, it's just that the Ooze UB is a slow and steady attrition build. It is not a burst. All that matters is that you can outlast him. If it's level 11 or so, I might have a point in Silence depending on how the game is going. If I do, I'll get him to low enough HP I think I can finish him in 3 seconds (so the 300+pounce mark), Silence-Pounce-AA and try to stop the Sigil. If I don't, I become heavily disadvantaged. If I do, I just got a lucky kill. Of course, this assumes I have massive amounts of mana and I probably have burnt through most of it by this point.

It doesn't really matter if he has a monk or anything because I have Counter Healing. If his team partner wasted his gold on getting Bishops, all the better. 

--

Larger games becomes tougher. Ganks occur, so it's unlikely (even against very good players) that there have been no deaths by level 10-12 or so. There may only be 1 or 2, but that is still about 1k more gold, which may be enough to give him a Narmoth's, which make fighting him much, much harder. But the game plan is still pretty much the same: only fight him out of a creep wave. Either your creeps are past the point of engagment (at their towers, you have their portal that is spamming creeps into your lane) or at the XP flag. You WILL LOSE otherwise. Period.

Ising ooze mostly kills his HP regen. So if you have a charchter that can spike damage, or mainly uses abilities that arent effected by the %aa decrease, then you can wear him down that way. Albeit, his superior move speed pretty much kills much chance of kiting him away. Lol.

another gay thing about ooze is the suicide aspect... wtf! its still like that.

but yeh ... i never knew about the 40% slow down on attack speed it causes at max level.

Rook tower can deter an ooze from comin in close range. But theres prob no direct counter to ooze, you'll just have to play smart.

The standard way to avoid getting killed by ooze is to avoid an ooze UB at all costs.

Ironically enough that usually works for UB haha

Other than running back and forth to try and get the UB to 'bleed himself out' there isnt really a lot you can do unfortunately

wtf? where does it follows that it is op?

no, the ub is not op!