For your information, 
negates all the magic penetration that 
+ 
give and also grants an anti-magic damage shield for only 1300 gold.
+ (2600 gold) = 33 magic penetration
(1300 gold) = 35 magic resist
Crispy0Snake9 votesBut hexdrinker takes a lot of tempo out of an AD Assassins build path and Oblivion orb builds into Morello which is really useful for a mage as it gives their abilities GW. Mages can counter armour pen with Seekers, but seekers builds into an item that makes them immune to damage for 2.5sec.
Hexdrinker builds into Maw... it's more of a bruiser item. The passive isn't even that useful. It's no wonder AD assassins don't build it. QSS would probably be more useful.
HP Crookshanks2 votesYou forgot mages also have to build a mana item because they have the most costly abilities & lowest mana pool in the game and they also rely on their abilities to do damage.
saltran4 votes[{quoted}](name=HP Crookshanks,realm=EUW,application-id=3ErqAdtq,discussion-id=cdG1AAzA,comment-id=00000000,timestamp=2018-12-22T21:40:56.335+0000)
You forgot mages also have to build a mana item because they have the most costly abilities & lowest mana pool in the game and they also rely on their abilities to do damage.
Mages have the biggest mana pools early game but have less mana growth because they have mana in is their items they buy is the proper way to say it.
Dope Solo1 votes
Exactly.
Eedat7 votesand a 300g 
negates out the lethality of a 2900g 
for most of the game too. I thiink the correct statement is mages can do close to true damage if their opponent doesnt build MR. I dont think anyone has less than 40 base MR though
D357R0Y3R3 votesI dont think anyone has less than 40 base MR though
you would be surprised
AirKingNeo5 votesHexdrinker doesn't scale well while Sorcs and Morello do.
Sorcs and Morello are standard buildpath items while Hexdrinker distastes from the core build.
boricCentaur14 voteslol you should not build hexdrinker most games like maw sucks like that is a fact is not a good item like no one builds hexdrinker for that reason but 90% of mages can fit morellonomicon into there build so stop being up a item no one should build its like saying adc are too save vs assassins since they can build GA.
Salron3 votes1 person buying hex doesn't stop your 33 magic pen from working from the other 4 people in the game Not to mention like other people in this thread have already stated that Sorcs and Morellos are core on 90% of mages in the game while hexdrinker will slow down the powerspikes of anyone building it