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
Kenrith is a very powerful 5 color Legendary creature from Throne of Eldraine who sees play in cEDH because of his 5/c color identity and his ability to serve as an infinite mana outlet
Alternatively, buy in bulk online for a cheaper option
Merlin, Goat A stubborn goat that wont stay away Playing straight into purples prowess in bouncing cards between your hand and the table for those precious lore points needed for victory is Merlin, Goat
If you have playable cards like trainer cards, energies, and popular EX or V cards , you can sell them quickly here
Facebook Marketplace: This offers a more old-school way of selling your cards, as it is typically done locally and without sellers fees