Grave-Shell Scarab

Commander is where Grave-Shell Scarab actually earns its slot — 100-card graveyard decks want recursive value pieces, and the combination of a death trigger and built-in dredge gives it a genuine engine role in Golgari or Sultai shells. In Legacy and Vintage it's legal but essentially invisible; six mana for a 4/4 with no immediate board impact can't compete with the format's density, and dedicated dredge strategies have faster, more explosive options. Modern is the same story — the mana cost is too steep and the payoff too slow for a format that ends on turn four. Oathbreaker is legal and could support a graveyard-focused signature spell package, though the 60-card constraint makes the six-drop ask harder to justify.