Heroic Intervention offers instant-speed protection by granting your permanents hexproof and indestructible. In Modern, green creature decks and some enchantment or artifact strategies test it as a way to beat sweepers and targeted removal. It plays especially well in metas heavy on damage-based sweepers or Prismatic Ending-style effects. Although more famous in Commander, it remains a respected sideboard option and blowout card for green Modern lists.