Talk:Heimerdinger/@comment-186.136.186.166-20120623170222/@comment-5052127-20120624001441

MPen is REALLY important for him as well as CDR. MPen scales with his abilities ridiculously well because they have high base damage and relatively low ratios compared to the base damage. Getting 20 MPen early on adds the same amount to his damage vs champions that 80-100 AP would (so about 400 gold in MPen gives you the equivalent of 1800 gold or so in AP). This base damage is the same reason CDR is so good on him, besides giving him his stun and ult more often which he often needs to survive.

If you get lucidity instead of sorc shoes, get haunting guise early and hold onto it... either way, you will probably want to get either void staff or abyssal scepter later on to add more MPen.

This is a typical build for me.. boots+3pots, kage's pick, catalyst, sorc shoes, RoA, Rabadon's... after that, finish Morello's Tome or Deathfire Grasp, then I typically go for Abyssal Scepter/Voidstaff and Zhonya's in whatever order i need them. Sixth item is always different, depending on the game if it goes that long.

Alternatively, if i'm scared of the mid i'm against... boots+3pots, chalice, sorc shoes, Rabadon's, unholy grail, rylai's, then abyssal/voidstaff and zhonya's.