Until end of turn, it becomes an artifact creature and gains haste
The adding of planeswalkers to the target range helps a little against creature decks but it doesn't help enough against the creature light decks
This can deal a heap of damage to something
On the other hand, the long-winded introduction and rare subsequent usage allowed them to retain their godlike status and the thrill of their appearance in battle, even before we talk about their crucial plot relevance for the remainder of the series
Upon entering play, she can exert up to 2 characters, preventing them from switching to Ready on their owners next turn, which is a thematic representation of her freezing abilities
Ambrosia Whiteheart and Sazhs Chocobo both come with landfall, and Ambrosia can even bounce permanents for value