Convert Veigar's Basic Attacks To Magic Damage
Okay, so the other day I made a post about how I think there should be SOME champions with basic attacks that deal magic damage instead of physical damage.
See the full post here
The idea seemed to go pretty well. Currently sitting at a sum of 49 votes in the positive and over 100 comments (about half of the comments were mine, so if you comment something relevant, I will most likely respond)
But the overall post was very vague and it seems like people failed to understand that I was not suggesting that EVERY champion who visually attacks with magic should deal magic damage.
There should be some careful consideration in deciding which champions get this change because basic attacks give a champion the means to deal sustained damage. If a mage, that usually relies on their abilities to apply burst damage, gains the ability to deal sustained damage as well, this would be a significant buff to them.
One of the comments brought up Veigar, and this made me think about him as a specific example.
Due to Veigar's passive, even if he builds full Attack Damage, he is able to accumulate Ability Power.
This gives him the ability to deal a mixture of magic and physical damage, both sustained and burst damage.
By having Veigar's basic attacks scale in the same way (based on Attack Damage) but changed so they deal magic damage instead of physical damage, he is able to be more effectively countered by magic resistance.
This is just an example of how this could be applied.
There might also need to be considerations made for how critical strikes scale.
for the champs that actually need onhit AP as well as 
takedown.. which is an auto attach but deal all if its damage as AP.. even if u went bruiser nid as in season 4.
or 
autos AP