your right i actually missplaced the boots, as for the health and mana that's why i put rod of ages a first item whitch gives you mana and health but i go with health first since nunus passive is gonna help you with mana anyways. Thanks for your feedback

Nice build but i think that Boots of Swiftness are bad for Nunu's skills he needs Magic Penetration, also he is getting boots too late, first he needs some mana and health to be better on lane, then Magic penetration and after that Ability power