Morphling so stronk he has no counter. You've picked Pudge in a third of your games, time to change it up.
In all seriousness, what is the Morphling counter? Almost everything I can think of is STILL countered by Morphling.
Sven - Morph during stun, lol waveform. Get off scot free.
Venomancer - Your DoTs mean nothing for my morphed strength
Earthshaker - Fissures don't mean shit
Naga Siren - Maybe, but you have to have Na'Vi levels of coordination to set something up with that. Something pubs don't always have.
Sand King - Morph strength and laugh again
Templar Assassin - Oh no, woe is me, I'm slowed by a trap, WAVEFORM
Broodmother, Enchantress, Chen, and anyone else with extra units to body block with - Waveform gives not a shit nor a fuck
Ogre Magi - Maybe if you smoke and happen to get some Ogre Magi x4 bullshit going while he has his strong pants down, but as long as the Morphling doesn't go full Agility, he can still just waveform and morph as soon as the stun is over. The slow doesn't even matter.
Queen of Pain - Again, you have to blink in on him and catch him with his strong pants down, but she has no stuns and after that blink is on cooldown, good luck.
Leshrac - Split Earth + Edict + Ult, but even then all he has to do is survive the Split Earth stun
Invoker - EMP will help a lot obviously, but Morph is only 20 per second, and assuming Morphling has some good mana regen on him, he can make that back quick enough to start stacking up the Strength.
I could spend all day going through the hero list. I still believe Morphling needs a nerf.