I'm not sure OP is the right word, but whatever.
They certainly are some unique, high impact and trademark skills.

first :D

The Sniper ministun on headshot and Spectre's dispersion when her illusions had the ability were probably also some of the most OP abilities in the game.

fuck bh

Woah, cool topic.

no hero is born perfect?
nobody is perfect,i am nobody, i am perfect. - Sven

I dont even know what to say actually... LOL

The other way is much more interesting in my opinion. If you look at pre 6.60 Sven you'll shudder.
-Stun is single target, less damage but better cooldown. Bad version of current WK stun
-War Cry was an aura that'd give 5 armor at max level, no MS
-Cleave had like half the reach and half the power (max 40%)
-God Strength gave only 100%/125%/150% damage and was PURGABLE(!!!)

While you could say, that in a way most heroes simply do become stronger with time, this is probably one of the more insane cases.

The MK perma bash with his Wukong Command in late game.

Phoenix Sun Ray slows enemies

Bloodseeker Rapture initial 100/200/300 pure damage

Sniper headshot mini bash

Rikimaru blink ulti

Necrophos 1.2 aghs upgrade damage

Oracle False Promise grants invisibilty during its duration

Mirana quad starfall aghs upgrade

Remember when Dotabuff tried to say that we needed more time to decide whether or not Monkey King was overpowered?

https://www.dotabuff.com/blog/2016-12-21-one-week-with-patch-700

Everyone with at least one eye could see he was OP as fuck. "TBD" my ass.

Let's not even talk about Arc Warden

slardar ulti providing aoe vision? that was pretty cool

Enchantress' Impetus was once her Q

Can someone explain this, btw? Unless I'm misreading it, isn't this still possible?

Prior to 6.77, Lasso allowed Batrider to attack the caught targets still, making it much simpler for Batrider to get solo kills.

^attacking means right clicking in this case; before 6.77 lasso didn't disarm Batrider.

@ Anomalina It's no longer possible. Batrider is disarmed when lassoing someone, but he could still use spells and items, which essentially means if batrider lassos a bkb target without any allies around, the target could just blink away when the lasso ends :P

Ah, ok.. thanks! I didn't imagine that scenario, makes sense! And here I was wondering why Batrider's right clicks even matter..

bh for the win lol.

thanks guys!

@Kiru and @ayase nice comments.

Sniper's ministun was horrible to lane against. But his 3 charge no CD shrapnel was so so bad, since it landed instantly or almost instantly. Now it has a... 1.x second delay and it gives you a chance at least to guess where he's dropped it and to try to get out of its radius!

earth spirit's ult is still op... with or without aghs

99% magic resistance Huskar

No mention of Injoker, Necrophos, Lich, Axe, PA?

Remember IO chaos knight? good times

Arc Warden. The entire hero during his initial release. biggest lol ever

@KeepAwake HOHO HAHA

ORACLE ULT USED TO BE SO OP, WITH ONLY LIKE 20 SEC CD

6 times bounty alche xD

right now remembering while slark ss just has 20 sec cd and arc's tempest double could bring rapier as well

and yeah, while phoenix was introduced (dota 1) the sun ray was really OP AF, it slow enemies up to 80% and dealing PURE DAMAGE without SKILL DURATION and COOLDOWN (which means u can use it anytime and as long as u need to kill the enemy) we can even suicide using it lmao

Naix with only one active ability, which was a 20 sec built in BKB?
Terrorblade diving a tower and 2 heroes@lvl 7 with his non-channeling 80 hps life drain?

Remember when Riki had WD's ult...

let's see..

riki's deathward
invoker's 31 spell rampage
GAMBLER
medusa chain lightning+splitshot
FV global stun
Conjurer
OLD SILENCER
Void Demon
old pudge
morphling's ulti could change primary stat

Tombstone used to be overpowered and undy was a really good 2015 TI stomper.
I missed that tombstone !

You forgot to include the change of the geomantic grip where in the first introduce of the hero, the geo grip do stun instead of silence and boulder smash do silence instead. Prior to that, I really like spamming es since it is so "OP" like the article topic is. But then in some patch it change to geo grip do silence. It make him less popular for a while in meta

80 sec instant nigthtime which pause during gametime with 120s cd

and that was when nighttime and daytime is 6 mins each

lets count if ns use it during 1st second of nighttime

he could make full 19 FUCKING MINUTES NIGHTTIME XD

How to win when there are no op heroes? Everyone's winrate is below 55%, while those in mobile legends and heroes evolved have insane 70+ winrate.

don't forget about void's backtrack which gave right click AND spell evasion lol

deafening blast need to mention

The one broken thing I like is TI3 Chen and Io. Chen the key to snowball and Io the god of split push. OD and NP were OP but what unstoppable were Chen and Io. Then post TI4 the meta changed dramatically and suddenly single lockdown heroes like Storm Spirit and Tuskarr stole the spotlight.

what about faceless void's old evade? It used to have its own mechanics and allow faceless void to evade actual spells such as laguna blade. It was the only evade that truesight didn't work on, so even buying a mkb wouldn't work. That was the reason faceless void used to be one of the hardest carry, with that evade he can go ham with 5 heroes and come out ahead with some luck and a good chrono.

sniper used to have ministun

One the other hand, I remember back in the day when you could see when a Spirit Breaker had charged at you, so you'd just turtle back to tower and prepare before he even made it.

Also all those dead-weight passives like Death Prophet's and Necrophos' that were later integrated into another one of their skills.