its probably ok. while playing AP nunu, AP > mag pen due to his ridiculous scaling.
I bet AA stacking nunu could score pentas with absolute zero
These are relevant facts, so don't just downvote without any explanation:
Nunu, without Blood Boil, has less DPS at level 18 than Soraka.
Nunu, with Blood Boil level 5, has less DPS at level 18 than Kassadin.
Atckspeed Alistair, dagger first
I don't go all in on auto attacks.
But I do buy Malady and Aegis of the Legion.
Net, that's about 28 damage added to your attack, and +50% attack speed.
After that I go for tank items and tanky AP items.
Nunu is a great anti-aircraft. Auto attack? Not so much.
© 2013 Riot Games, Inc. All rights reserved. Riot Games, League of Legends and PvP.net are trademarks, services marks, or registered trademarks of Riot Games, Inc.