Past Standard examples include: Fable of the Mirror Breaker, Atraxa Grand Unifier, or Raffine Scheming Seer
Plenty of black Commanders want to be attacking, and so in decks as varied as Gix, Yawgmoth Praetor to Yuriko itll find homes
However, Hamon, Lord of Striking Thunder is an exception, as it has been playable in some capacity in many competitive formats throughout the game's history
Legendary Creature - Berserker Dwarf Timeless Dragon Flying Plainscycling (, Discard this card: Search your library for a Plains card, reveal it, put it into your hand, then shuffle.) Eternalize (, Exile this card from your graveyard: Create a token that's a copy of it, except it's a 4/4 black Zombie Dragon with no mana cost
The other reason you might want to throw in the towel now is the sheer time commitment the game asks from you