To those who complain about Heimerdinger
*clears throat
Are you joking?
Heimer sets up his illuminati zone, and yeah, anyone who walks into it will probably die.
However, that is not Heim being OP. That is players failing to abuse his weaknesses.
Q: Very, VERY high damage. He will swagwalk around in his triangle and kite you to death if you try to dive his turrets. The thing is, these are easy to kill.
E-Q kills the turrets isntantly
Can spam Q and W-E to keep Heimer defenseless
Can kill the turrets with any skill she wants, while negating the return damage with W.
You get the idea. Kill his turrets, and KEEP killing them. If he cannot build up his domain, he is screwed.
W: High damage, long range. Also a decently long cooldown, ~10 seconds generally, so in a fight, he can generally use this once or twice.
E: DAMN that hitbox is small. Slightly longer cooldown than W.
R-Q: Fun fact, you can smite this thing to negate a large chunk of Heimers presence in a fight.
R-W: Dodge it, the hitbox is still pretty small. Afterwards, take advantage of how heimer does not have his Apex turret.
R-E: VERY high impact skill, with a rather long range, but it also has relatively low damage and a slow travel time.
tl;dr: Kill his turrets, have the jungler smite his ult turret (or bring a 
), dodge his W and E, and abuse how weak he is when his skills are on cooldown.
Fizz can kill heimer and then hop out again before he has even taken 500 damage
Yasuo can windwall to stop the turret autos, E on the turrets to dodge heimers W/E, and hit two turrets at once with his Q3.
And riven can use any ability to kill the turrets, while blocking damage with her shield
top for example), your jungler might. 
all have ways of clearing his turrets when they gank with just the collateral damage of their spells.
