Hello,

My name is Goomba. And this is a Off-Tank Amumu build.

The runes i've picked are:

Mark of Insight for some magic pen
Seal of Resilience for some armor
Glyph of Wardign for some magic resistance
and
Quint of Fortitude for some health

this makes you a little bit stronger in early game so you can stay in your lane a little longer and you do some more damage on champions if they have magic resistance, but i won't be much.

CORE:
The first item you should buy isa Doran's Shield so you have some health (regen) and armor. A good first item for tanks. '
After you have bought a Doran's shield you buy yourBoots of Speed
If you have enough to buyMercury's Treads, it's obvious you buy them directly. Why i picked Mercury's Treads? Because they give you tenacity which is very usefull.
After that you buyFor your health and armor and it does damage to minions, monsters and champions arround you. That makes a good combo with Despair.


The sequence of the upcomming 2 items doesn't matter. Because, if you are still in lanefight and not teamfight, if you take more Magic damage you buy Abyssal Scepter First but if you take more Physical Damage you buy Zhonya's Hourglass firstand

The last 2 items give you your last defence
Lich Bane for magic resistance and Randuin's Omen for armor, but to buy the Randuin's Omen you have to sell your Doran's shieldand



CORE:
META GAME:
LATE GAME: