pokemon galvantula card - ex 159/142 - Stellar Crown Colorless Artist Galvantula - 48/181 - Rare

It shuts down lifegain, which is a very black-themed thing to do, and gives you a great draw-engine that isn't limited by tapping

Legendary Creature - Advisor Fox Nashi, Moon Sage's Scion Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.) Whenever Nashi deals combat damage to a player, exile the top card of each player's library

It is also worth mentioning that this card is now legal in the Modern format

You can also run it fairly, as a commander that provides both a mana advantage and card advantage since it effectively copies your instants and sorceries and gives you a discount

However, there are better cards with similar effects such as Glorious Anthem or Collective Blessing that offer a more impactful and consistent boost to your creatures, making them more viable options for competitive play