Not Updated For Current Season
This is an offtank/pushing build.
I grab the first health regen item then the first part of boots. depending on whether I can farm enough gold up I ether finish boots or get warmogs first then finish boots. I grab sorrcerers boots for speed magic penetration and warmogs for the health regen and health that you will need for this build. I then grab rage blade for attack speed, ability power, and attack damage. This item is useful because it buffs his ability mace of spades. I then grab lich bane because with this his ability power can be converted to attack damage for more spaming of regular attacks and mace of spades. Then I grab zonyas ring because it give large amounts of ap. Since this gives so much ap and a two second immune you need to start timing your abilities so that you use an ability then a regular attack or mace of spades. I then finish with the tooth for ap, attack speed, and ability cool down reduction. At this point you will be able to use your abilities near constantly.
Make sure not to over extend but you will have the ability to control your lane as long as you attack when the enemy minions come and you use siphon. Make sure that when ever you are attacking that there are a several enemies around you or enemy heros. If you are in a situation where the enemy is attacking without their minions make sure to fall back to your tower unless you have a clear advantage. If you can try and get the lizard buff so you can slow your enemies. Work with your team mate to push and harass.
This part gets difficult because you are still lacking your full aoe dps capability. Make sure to absorb as much damage as you can with your shield and keep recharging it by attacking several minons or heros at once. always make sure you team mate is not taking damage since mordakaiser is the offtank and can absorb damage with his shield. Also If you team mate feels it is not the best situation for you guys to attack and you guys might get ganked it is most likely better that you slow down the enemy instead of your team mate dieing but dont just stand their run away but be behind your team mate so they dont take the damage. After all they dont regen health and shield like you do. Defiantly when the opportunity presents itself get a lizard buff. At this point you will need to start timing your abilities so that lich bane boosts your mace of spades and regular attack.
If you have managed to have a game where your team is not being completely dominated cause you went in solo to 5v5 or something like that, the match is still fairly balanced and you managed to get one still use multiple enemies to charge your shield but do it while attacking. If you get all of your items you will have so much ability cool down reduction that you can spam your aoe abilities. However pushing all by your self will not work because you can still get cced and burst down by nukes and such. Make sure to time your abilities with the lich bane buff as follows; Initiate with siphon, regular attack, use creeping death, then use mace of spades on a champion and finish with ult rinse and repeat except replace ult with siphon then repeat.
Early game tanking
Higher damage out put then other builds
Can take out creep waves like nothing.
End gaming pushing is very high.
Easy to farm gold.
Can attack enemy champions and towers with much more damage.
Lacks magic resist and armor.
Lacks magic penetration which you might consider getting more of by switching one item with void staff.
very reliant on having multiple enemies to hit.
No slowing capabilities from items you have to rely on ghost or grab a lizard buff.
Time is everything.
Your a bit more squishy be careful about attacking like an all out tank.
Use ghost for chasing down enemies and for escaping.
Constantly use your abilities.
Ult is very useful with ignite so do it.
please comment any concerns or questions thank you
and for the most part this build is now complete.