Greetings, this is a recent deck I have been creating in MTG Arena
To start off, I love Orzhov and Dominaria has lots of Knights within those two color bases. This is also a re-make of my former deck Legendary realm of glory.
Let's start off with the basics.
Knight of Grace and Malice - Explanatory to where both of them are able to join together with power making both of them stronger, also worth noting the first strike effect of each which keeps them mainly a 3/2 throughout the time being.
Legendary Creatures - Simple enough, everything legendary has a ability that benefits you in some way. Be it Shalai and the hexproof effects and sweet benefits to other fellow legendaries with Arvad the Cursed.
Basically the whole deck forms around legendaries but not many legendaries start off at one or two mana cost so thats why I have the dauntless and grace/malice knights, also they are also knights which synergizes well with eachother.
Artifacts - Blackblade reforged can reach devastating levels of power should you equip it to a Legendary, the best part, +1/+1 for each land you have, pair it with someone like Lyra, dawnbringer or another powerful summon and you'll be tough to defeat. Or even add it to a weaker legendary creature to become on par with the others. Either way, theres many benefits.
Sorceries and Enchantments - Urza's Blast saves all your legendaries while destroying everything else non-legendary, works good as a board wipe, except your board mainly. History of Benalia are cards that make knights not only stronger but with histories bonuses to knights and creating them, they become formidable opponets.
Last thoughts - I really do hope you find this deck somewhat enjoyable. I also appreciate any and all feedback to what can be done to keep this deck as legendary as possible. thank you for taking the time to read this and hope to create a strong but fun legendary deck for MTG Arena and tabletop even.