First of all, I do not remotely claim that I came up with this strategy.
Knight exemplar and honor of the pure are the engine of this deck. I saw many other knight decks that used this engine and thought - gee, that would work really well with the older knights.
I did not have nearly enough space for all my favorite knights, even though I have dropped the artifacts, instants, enchantments, and the White Knight. Other awesome knights include Pentarch Paladin, Sworn Defender, Kinsbaile Cavalier, Benalish Knight, Cavalry Master, and Knight of the Reliquary. So many fun possibilities!
Secondly, this is not the first deck I have built, only the first with this account. On the other hand, I am a little rusty, and would greatly appreciate your help.
Finally, a shout out to NorthernWarlord for helping me to find good instants, enchantments, and artifacts to support the creatures in this deck.
This is an aggressive white weenie deck. Just drop creatures left and right to quickly gain victory. As I said before, Honor of the Pure and Knight Exemplar really push this deck forward (sorry about the price ....). Truly ridiculous things happen when multiples of these cards, especially Knight Exemplars, are in play.
Neat tricks with this deck:
Student of warfare can hit for 3 on turn two for 3 mana, or turn into a 4/4 with double strike for 8 mana. Don't worry about pumping it up - that's what your opponent will be doing! In fact, it's great at making you opponents waste removal.
Apart from keeping you from being mana screwed, Knight of the White Orchard is very good if played right. If you go first, play him at the first main phase of turn 3, BEFORE you play a land. His ability will almost always activate, and since you have not played land, and still have 2 to your opponent's 3. THEN play your land. Ouch, now you have 4 plains on turn 3. And 2 mana is available for this deck's many 2 drops. This technique can work in any main phase, so don't feel pressured to miss dropping a knight exemplar turn 3.
Brave the elements is great for late game attacks, or fending off pesky red or blue attacks, or just plain awesome shenanigans in multiplayer matches. Think of it as the blue shell of MTG. Beware of lost friendships.
My final tip (not really ;) though this is an aggro deck, and you should attack each turn if able, be patient. The knights will simply be unstoppable in large numbers. Even a "wimpy" 2/2 with first strike can get really strong when buffed by battle cry, a knight exemplar, and an honor of the pure all at once.
Oh, don't try to use this against blue control if it's part of your local metagame. Against casual opponents you should find fun competition, but Jace turns this deck into confetti. @$!# it Jace! I thought you gated Garruk - [insert rebound's flavor text here].
Finally, the sideboard contains some great red hate.
If you find your self against a lot of removal, running hero of bladehold and knight of the holy nimbus is a great idea. Kinsbale Cavalier and accorder paladin are awesome together, but a tad fragile. Feel free to mix and match!
P.S. Wrath of God is hilarious is you have a knight exemplar out. All creatures but her are fine as you sweep the board of ... everything. Seriously, not even protection or shroud can save you. Then use elixir of immortality, then relic of progenitus. Then laugh maniacally. The only way I see around it is indestructibility or Emkraul, The Aeons Torn. Just exile him.