this build work's pretty well for me. and i hope it works for anyone playing veigar. but keep in mind that i mid with this build so idk how well it would work on bot or top lain.

keep in mind that this guide is NOT done yet

now for veigar, farming can get you gold AND more ap if you kill creeps with your Q, and you want do this a lot. but your q is also a great poke and if you poke they lose health, and if they lose health they have to heal, if they have to heal they lose posable exp and gold, which will give you an edge. and yes that sentience was very necessary. so long story short. farm with Q

you may be able to take out (almost) any champ, but its a bad idea to lead your team into a fight. you just wanna stay in the back and throw skills and you will get a few kills. use dark matter whenever possable and save your stun and death-fire for there carry trying to chase you down or manages to charge through you're team to get you. other then that. just keep throwing q's from behind your tank, and never go alone

p.s veigars stun's awesome for ganking

normally i would run ghost instead of flash but i have found flash to work alot better in early, mid, and late game. and tele for quick farming.

the rune's i chose will help a bit with your mana hungry veigar and get you a few kills more