Several examples of typical black cards include Fukurou from Pillars of Strength [OP-03] which cant be KOd by effects, Kuzan from Paramount War [OP-02] which enables the player to draw a card when played before reducing the cost of an opponents Character by 4 during that turn, and Hina from the same set which when on block, allows the player to select any of the opponents Characters with a cost of 6 or less and prevent that opposing Character from attacking during that turn
All you really need to do is untap with it
One of the things that has remained constant is the design on the back of Magic: The Gathering cards for obvious reasons, namely that you need to ensure that no matter what set a Magic card is from, it should be completely indistinguishable from any other card in a deck
Some examples of notable patterns include: Tinsel Holofoil: Used from the Black & White to Legendary Treasures sets, featuring horizontal stripes across the image and, in Japanese cards, a tinsel effect on the border
UV PROTECTION: With a 99.5% UV rejection rate, you can be sure your boxes will stay safe