Isildur's Fateful Strike is the first legendary instant, while Urza's Ruinous Blast is one of the most played legendary sorceries
Anguished Unmaking Destroying a threat is good, but exiling a target is better: Those pesky death triggers won't trigger (because exiling ain't dying!), and most decks have no way to profit from exiled cards (unlike cards in the graveyard, which some decks are thrilled to have)
Its one thing to get a big battlefield advantage for just casting Cathartic Reunion
Its strong, and like most expensive spells needs to be evaluated in the knowledge that ramping artifacts to get to higher mana quantities is easier than doing it playing any color, barring perhaps green
In this sense, unless the card gets exiled, it is quite difficult to actually deal with
As a Lord of the Rings fan and player of every LotR deckbuilding game theyve published, theres just a great feeling entering the world