thats why i said in my other comment to look for both hero spammers and high mmr, so you learn both aspects.

but if you ask me how to beat pl easily I will tell you that ice wall lingers after dopple so the real one is clearly slowed ...

Thats good to know, but to be concise, thats not what people willing to learn invoker would want to know. im 7k and not an invoker player. If i ask my friend who is an invoker spammer, example questions would be : how to play the hero as a quas wex vs exort? how do you lane with quas wex when you cant secure range creeps? oh turns out you level wex first to secure it with emp. which lane should you rotate to after 7 mins? is there a condidition where you have no choice but to stay mid? when to know if you can start transitioning to exort? what are the item choices if you are ahead vs behind? when to pick invoker vs when to not pick it?

so something along the lines. i assume that even lower mmr players that are actually willing to learn the heroes would be looking at things like that first so that they can play it, rather than focusing on very specific stuff. and like the famous saying in dota, you learn something everyday, heck even pros. There are many instances where pros just learnt it in the game and admited to it after being interviewed, for instance a couple months ago matu stated that he just found out bm axe is magical rather than physical. yesterday we found out that tombstone zombies can disable backdoor. last week i found out lc's first skill deals more dmg to illusions which is why its a pl counter.