Think cards like Skullclamp, Three Visits, or splashy Game Changers like Smothering Tithe and Cyclonic Rift
These guys can help you deal with a variety of troublesome permanents without diluting your deck
There arent specific scenarios where A Whole New World is a must-have
The evoke is also only 1 blue mana, where casting the creature normally costs 2 blue mana, meaning if you're having trouble getting 2 blue, this card still isn't dead in your hand
You can sac a dork or artifact at sorcery speed for no mana investment to give her a +1/+1 counter and then if is was a Treasure, she gets lifelink that turn
Endestructible We only make a handful of cards with indestructible because it can be so game-altering, but when you find yourself playing with them, they can make a huge difference