Why hello there guide reader! This is my very first guide I've ever made, and I've figured I'd make it, since this uide isn't for SERIOUS players.. This guide is just for kicks, and I don't recommend using it for serious Dominion games. Although, I use it for serious Dominion games too, and I win them anyways. I know some people (me) don't read through guides a lot of times, but hey, take your time and read through mine so you can see why and how I play this Rammus build! :D
Anyways. That's my ****py Introduction and I'm not afraid to say so. Enjoy the guide!

PROS!!
-Over 1.5k MS when you have some Zeals or PDs, and speed relic.
-Great for sneaking to enemy's mid point and capturing it, and then leaving.
-GREAT DAMAGE DEALING!!

Cons :( (Wish there was no cons.)
-SQUISHY ARMORDILLO!!
-Not tanky! Read first con.
-YOU. CAN. NOT. TANK FOR YOUR TEAMMATES.

You are not the tank. At all. Do not go in first unless you're trolling hard style. ADVISE your team in champion select, that you are not tanking, it's a must.
~Beginning~
You can do one of two things.
1).-You can go for your mid point, of course Powerball there, don't waste Ghost yet. Use Ghost on your way to top instead.
2).You can Ghost to speed relic that is on the way top, once you hit speed relic or get close to it, activate Powerball.
~Mid and Late game~
CONSTANTLY be going for their mid point when they least expect it, gank bottom lane from time to time, and defend Windmill when you really need to. It's the basics of Dominion. Very simple, if you fail at it, this is what I have to say: YOU'RE BAD. TROLOL.

~Quints~
-Simple. Extra movementspeed.
~Seals~
-Simple. CDR for more Powerball and Ball Curls when in tight situations.
~Glyphs~
-Simple. Read ~Seals~.
~Marks~
-Simple. Read ~Seals~ and ~Glyphs~.

~Ghost~ is a great summoner spell, due to the speed buff, which helps achieve over 1.5k MS.
~Exhaust~ is a great summoner spell, due to the slow and m- You know what it does. Use it when running away from people, or in the middle of a fight.
~Flash~ is a good summoner spell, but not as preferred as Ghost and Exhaust. I'd use Flash when trolling people instead, to juke people nasty style.
~Cleanse~ is a decent summoner spell, but definitely not as preferred as Ghost and Exhaust. I highly suggest using this when on Draft Pick, and you see their team is full of CCs.

Powerball LAST. Only thing it benefits, is damage, and that's not what I'm looking for in this guide. The downside about leveling up Powerball is the mana cost, which is not so pretty. That's why I only get level one. Nothing else increases except damage.
EVERY OTHER SPELL is to be level'd up evenly, while keeping DBC (Defensive Ball Curl) over Taunt at all times. Only use DBC when they are chasing you and you have Powerball on cooldown, or they stopped your ball. Use Taunt when they are chasing you so they don't cast any spells, but becareful when turning around to taunt a fed Tryndamere/GP.. They're ***** heads.

I seriously shouldn't need to explain it. But I'll do it anyways. For the sake of newbs.
Get 2 Zeals before you upgrade the first one to a PD, and then for the rest of the PDs just get one Zeal and then one PD. Always get the attack speed items before the crit items in the Zeals and PDs. You'll do more damage with the attack speed items once you already have 1 PD and building your 2nd one. Get FoN when you really need it, when their team has casters.
Get Infinity Edge when you feel like you want to do more damage instead, but that defeats the purpose of speed Rammus, and makes him more like stacked PD damage Rammus.
You might not even be able to finish all your PDs anyways.

This is going to be quite the ****py summary.
To sum it all up, have fun, brah. And when people try to troll you, don't waste your time, just say, "Ok." and ignore them. I don't want to be responsible for anyone getting reported for trolling, when this isn't a troll build at all, because I've won quite a few games with this build, in fact, I've won more Dominion games then I've lost with this build. Hope you enjoyed my guide! Thanks for taking your time to read through!

P.S. I am not responsible for your bans if you get reported.