While you need to be in Orzhov colors to maximize this card, its not a requirement
While still a decent boost, lords have been given stronger, more one-sided abilities over the year, with Goblin Chieftain from core set Magic 2010 showcasing that power creep perfectly
Naturalize destroys an artifact or enchantment in a Ghave, Guru of Spores deck, but Sundering Growth and Seed Spark are probably better cards that build on the token theme of the deck
Skullclamp [Broken Draw Engine] If your first reaction to Skullclamp is, what were they thinking?, youre not alone
Nesting Bot is in Standard right now, for example, and makes this look incredibly weak by comparison
Now, if you want to do something incredibly innovative with your custom card, like introducing a custom frame or weaving together text and image like some Secret Lairs do, Photoshop/Gimp is likely the way to go