Since Mordekaiser is a heavily reliant AP champ with low cooldown spells with no mana cost, why not build CDR for spell spamming, Spell Vamp to return the cost and more of casting, and alot of AP to pack ALOT more punch? Works for me. Lemme know how it works. Obviously on Twisted Treeline you usually will only finish the three revolvers, boots, nashors and rabadons. However on long 3v3 matches or most summoners rift matches you should be able to upgrade revolvers to gunblades when you can. remember, run in, shield yourself, ulti them, then spam mace and siphon for the kill, dont overextend though, seeing as this mord build is very squishy in comparison to others.