This is my First build ever, its ment for surviability and being unkillable and tanking everything. Please comment and tell me what you think.

You want Ghost to get away or chase champions that are running, next you always need ignite no matter what, you use it as a combo with your ulti to completely destroy people and take over them.

You want Magic Pen runes, Dodge Runes, Force Runes, and Potency runes because Mord lacks Ap which this will make up in the end with 100 or more ability power. Reason you dont need HP runes is because you grab a Warmog and other items later on

You go 9/21/0 in offence for more magic pen, and in defense it helps your tanking more and increases your ability power. You need to survive in your lane more than spam skills.

You can start out with a Regrowth Pendant and 1 Health potion if they don't have alot of Physical damage, or if they do start out with a Doran's sheild. Follow up with a Regrowth Pendant if you did not grab it first and rush for Warmog. The reason warmog is so helpful is because it maintains your Health Regen and increases your Hp allowing to keep your shield up and survive during the lane. Get either Boots of swiftness if they lack CC or get Merc Trends if they do. Go for Force of Nature if they have more AP then DPS or go for Thornmail if they have heavy DPS, or if they have both go for sunfire, but get the Force of nature regardless if they have AP or not because it increases health regen alot which Mord needs. Now you should have MercTrends or Swiftness, Warmog, Fon, Sunfire/Thornmail. Go for the abysal scepter for the extra AP and Magic Resis if they have AP or go for the Rouden Omen for more HP regen and Armor for their DPS. Lastly get the GA it makes you unkillable.

Maxing out Siphon allows you to harass and keep your shield up, and also last hitting/farming minions. Next is your Creeping death which keeps your shield up when tanking or taking on minion waves, this skill increases your armor and magic resist allowing you to tank so much more. Lastly get your MoS it helps with last hitting champs that are running away or 1v1 you. Get your ulti when ever you can. Be careful on spamming your skills because it takes alot of hp when you dont have your warmog built yet. To kill minions waves easily go E>Q>W>E which will take out the whole wave because the range on your siphon.

This is my mord build I rarely lose to any other mord because with this build your HP regen will be on crack, also your sheild will never go down because your armor and magic resis high. This should allow you to kill anyone and tank anything.