User blog comment:Lykrast/Aur, gold's master/@comment-3974211-20121201123650/@comment-5686533-20121201165419

"why is Midas Touch such a long cooldown when the damage is worse than Vayne's Silver Bolts, Nunu's Consume, Cho'Gath's Feast, Darius' Noxian Guillotine and Olaf's Reckless Swing?" Because you can just instakill anything that isn't a building, champion, dragon, nashor, vilemaw, elder lizard or ancien golem. I'm going to increase that damage.

"why even mention "during the cooldown"?" Because someone thought it reduce based on current gold...

"I've not played DotA, so your comparisons are lost on me." I think you should, so you will see what's a real item dependant, hard or easy hero (Tinker for item dependant, Skeleton King and Viper for easy, Invoker and Meepo for hard).