Mages vs Tanks
Can we please get some mage items that are effective specifically against tanks? I am tired of dealing laughable damage to tanks when I play a mage, when they've only built Armor, HP and not a single MR item. I am also tired of not dealing enough physical damage to a tank when I play an AD champion, because the tank itemizes against me, but the mage on my team doesn't deal any significant damage to the tank.
Answers to some potential arguments:
You cannot ignore tanks, a lot of them deal very significant damage.
It might be the ADC's job to kill tanks and not mages, but it is hard even for ADC's to kill tanks when all they build is armor and HP, the only exceptions are things like Vayne and Corki. Mages should atleast be able to keep tanks on their toes if they don't build any MR what so ever.
Liandris is not helping much.
A few examples of tanks I am talking about - Malphite, Mundo, Tahm, Poppy. They build things like Dead man's, Sunfire, Randuin's and the HP from these items is enough to mitigate most magic damage coming their way. MAYBE they will build one MR item, but then that becomes overkill, and a mage with Raba, Void, Liandris etc. won't deal any significant damage to them.
Once again I wish there were AP items available that would be effective against tanks specifically.