I think the card is likely not a four-off except in the Burn version because they can be clunky in multiples, but I think I always want at least two in my red decks
It's a 2-cost instant that can give all stuff -1/-1 (unlikely here), destroy an enchantment (possible), or save your team (probable)
Really, having great energy-generating creatures like Whirler Virtuoso or Roil Cartographer in your starting hand along with three Plains feels like cruel punishment from the Magic gods
You get to search for any card and put it into your handclassic tutor movebut if you have spell mastery (two instants or sorceries in your graveyard), you also get 3 black mana right after it resolves
Without action we will be burdened with a slow, and very expensive communications option (SkyMuster NBN satellite) when we are very close to the civilised world of Sydney, Newcastle and the Central Coast
It has been an evergreen keyword basically ever since, due to how cool its design is