Hey guys this is actually my first ever guide and i wanted to first say Ap nasus is very unique. I just tested it out and it actually works. Your main attack is your Q, Siphoning Strike. Your secondary is your E, Spirit Fire. Once you gain enough ability power ur spirit fire will do a tramendace amount of damage to your oponent. Ucan also just add ur own Ability power items to ur build but make sure u have the Magic penitration runes.