Strategy

Eater of Virtues seemed pretty awesome, so I built a deck around it. Be relentless when attacking with equipped creatures; if any die with Eater of Virtues, those keywords get stored and can make your board even stronger. Vigilence and lifelink are very powerful defensively, which should give you an edge over other aggro decks.

On turn 2, Puresteel Paladin or Sram, Senior Edificer are insane draw engines with 4 Cathar's Shield and 4 Eater of Virtue.

Blade of the Oni buffs your Puresteel Paladin and other creatures immensely; it even works with his second ability!

You win when your opponent is dead.

Cards

Red and white have some powerful equip cards and knights, such as Fervent Champion, Swiftblade Vindicator, Puresteel Paladin, and Fighter Class.
But because we run so many knights, why not add Tournament Grounds and splash a bit of black here and there?

Cathar's Shield is nutty when you have Puresteel Paladin or Sram, Senior Edifier or even multiple of them!

Knights are not known for hexproof, so we add a single copy of Mirror Shield which can be tutored with Fighter Class; it even counters deathtouch for when first strike or double strike are not present.

The reconfigure creatures in Neon Dynasty Kamigawa actually synergize with Puresteel Paladin's second ability, which is definitely balanced considering Blade of the Oni.

Murderous Rider is there for some nice removal, its Knighthood, and its lifelink for the Eater of Virtues.

In total, an Eater of Virtues could grant lifelink, haste, first strike, double strike (in case first strike is not enough), vigilance, trample, and deathtouch. Not bad!

Sideboard // Modifications

The sideboard mostly contains more copies of the cards in the deck; I cannot which ones over others.

Many knights do have protection towards colors. Be weary if you include protection against black or red, because they cannot be equipped to some of your equipment.

For those ordering on a super budget, consider proxying Needleverge Pathway; who can blame you? Its $20 for four lands!

Anything with "Sword of" in the name is busted and expensive; in particular, the Sword of Body and Mind and Sword of Fire and Ice are very appealing.