In these cases, you should absolutely play as many of the situationally powerful blue ramp and acceleration cards that make sense for your deck
Many decks splashed white just to run Disenchant, such as early Sligh decks which otherwise couldn't remove a Circle of Protection: Red (and yes, we're talking pre-Anarchy here)
Her ability to dramatically reduce her own casting cost is better than you may think, and the supports available for a white flyers deck are as plentiful as they are affordable
The deck is designed to give you extra lands each turn, helping you ramp into expensive bombs to rampage over the battlefield
Uncommon Cubes should appreciate the card as well
But that's the sort of answer we want from the Pokemon TCG the kind that can go in either direction, demonstrating that it's up to one's savvy deck-building ability as well as their skillful deployment in battle