the armor and magic resist should be higher and the archangel's staff is not really needed after getting a R.O.A.

Voting +1, all it takes is some common sense with your build to make it work, again, my proof of the games I was in is enough to show this is a great build.

I can see what your doing with archangels but Sejuani isn't a mage. She more useful as a damage sponge and as a distraction so that your teams carries can clean up.

weres randuin. and RoA and archangel staff? shes a tank..

I just wanted to say I love this build, its the best one I've found so far. I've gotten great scores, and have not lost yet with it. Even managed to carry a fail team. (This being 3v3 games) As proof here you go:
Crossed out one was a different build, did horrible. Went back to this build, had 2 more great games with it. I think the build speaks for itself in all honest. The only Difference I have from the build to my games is I have Magic Penetration Marks, and all Health Quintescenses, and went 9/21 in Masteries, and went Heal/Ignite, Otherwise I'm using the same exact build for items.

P.S. Dont listen to these complainers above, "this guide is boring, no use of BBcode, cry cry, whine whine".. This is a good build, who cares how the page looks? A good build is a good build, my proof of the games is enough from what I've shown I've done with the build. Only thing I'd "suggest" is trying out my 9/21 with my rune setup, it works very well, and i've had every enemy team surrender early from it while using your setup for items.

Also suggest putting in a "situation items" double Warmogs if needed high health, Crystal Scepter which will stack ontop of your slow already, + its AP + its Health, it benefits her ALOT, I'd actually suggest putting in crystal scepter instead of Banshee's, and make Banshee's situatonal, you already have the merc treads to fight off those pesky CC's, Banshee's is if the other team is heavy in CC. Instead to get that additional MR Get an Item that has MR + AP, such as one of the staffs which adds adittional MR penetration along with MR defense and AP itself. Theres a few items like the ones I mentioend above, which can really work good on Sejuani in the right situations, should add those to the guide as well :)

Hmm..I have a lot to say..
Starting with..

The very-annoying spelling and grammar mistakes. I understand english not being your native language, but most people on MOBAFire have the same problem.You should have gone through a spell check before making the guide.

Like, omagma said, it's boring to read. You should add BBCoding, it's fairly simple, adding color is easy, pictures can be taken in-game by pressing F12...

I have a huge problem with your pros and cons chapter:
1st of all, being a tank is not a pro. Soraka is support, that doesn't make that a pro either. It's a fact.
2.You wrote LOADS OF CC, she has a slow and a stun, that's not LOADS of CC, that 2. YOu should have wrote something like "has two CCs;a slow and a stun
3.can escape almost anything if needed; bad sentance

should let the carry farm; isn't a con
boar doesn't look good; isn't a con, and even if it's a joke it should be left last.
takes time to get items- this is normal it's not a con
she is a high-mobility tank, there is no way in hell she is slow
best at end game-most champions are, this is not a con
enemy team normally surrenders before you can get full build- wtf? are you saying this build is so good the enemy surenders?

So my advice for you is:
1. BBCODE, COLORS, PICTURES, VIDEOS,
2. Spell-check

I will not leave a comment on the build, I do not own Sejuani, and it's not my place.
Also, 5k HP?

Can we see any proof to these claims of yours?

I have no idea how you can reach 5000+ hp whit these items.

i stated that this is my first guide and i will get to it when i can, on top of that i always follow this build and i do end up with 5000+hp and i have only lost once with this build out of 13 games so far so. Now i agree its boring and needs to have more aesthetic appeal but the build works extreemly well. Now i will test out the death cap or swithcing rod of ages with archangels staff and see how it runs.

You wont have 5000+ hp.

You build damage WAY to late. And getting a archangel staff that late is plain stupid.
You don't have time to build up mana, making it useless, an Rabadons death cap will be more effective.

The guide is very "boring". You lack any use of BB code, pictures and video might help.

Overall, this build is by no stretch of the imagination "effective" nor is the guide well made.

i do see your point but with 5000+ hp at 18 and being able to pump out mad amount of damage not including team help it would be a challange imo

"Unkillable" with 70 MR or so... Melee DPS might mistake this for a tank, but mages won't. Brand could melt you in seconds, and god help you if their auto-attackers build Bloodrazor. You can just surrender if they have a good Kog'Maw.

No one can be first because i am! =P