Rulings

• Mayhem represents an alternative cost that can be paid to cast a spell from your graveyard if you discarded the card with mayhem that turn. You must pay any additional costs the spell has.2025-09-19
• You must follow all normal timing rules when casting a spell with mayhem. For example, you can't cast a creature card with mayhem you couldn't normally cast during an opponent's turn, even if you discard that card during an opponent's turn.2025-09-19
• You can play Oscorp Industries using its mayhem ability only if you have available land plays remaining. There's no cost to playing a land; you're simply playing it from your graveyard.2025-09-19