It could even be a sticker
Outlaws of Thunder Junction gave us the Greave's at home version in Lavaspur Boots, thankfully the power boost helps offset how much worse ward is as a targeting-deterrent, but it's still several notches below the other two
Decks running it usually dont mind the tax themselves because they operate with cheaper threats or mana rocks like Sol Ring
Also, since Magic cards use a blue tinted glue to affix the front and the back of the card together, there will be a faint blue hue to the card when your light is placed against it
The same is likely true of Giden Blackblade, too
This Magic: The Gathering Starter Commander Deck, Grave Danger (Blue-Black), is ready to play straight out of the box INTRO TO MAGIC'S MOST POPULAR FORMAT: Commander is a multiplayer way to play Magic