Yes, you can use this card as intended and copy a powerful spell, but you can also attach it to something weaker and hope that players hold onto their counterspells as they anticipate a big move, allowing you to cast other spells instead
Mechanically, there are few things it can do that other colors also can't, making it feel like dilute and less focused than blue, black, red or green
The tapped ability is meh: It doesnt work in EDH, but sometimes you can do the trick in Constructed decks to find and put another one in playits not that good there, either
It only gets better as time passes, and your graveyard becomes a toolbox if you have some self-mill going on
After accidentally attracting a giant mer-eating serpent with her younger sister, Turi, Kiora desperately led the monster away from Turi, who turned around just in time to see her idolized older sister eaten alive