What makes the card valuable is that players can choose the same mode more than once
Tannuk gets a bit better if you can build around it, but every red deck obviously has red creatures that you can warp out if you want to, so itll also be generically good in any deck
That last part's the most common use, making this a versatile budget protection spell
Station Monitor isnt going to be quite on the same level for this reason, but its still a great payoff for the deck and a good reason to go into UW in Draft
The ability to enter the battlefield as any creature type you choose is powerful on its own
This, of course, makes her a very unreliable source of investment, and currently everyone is predicting its fall from grace to a $5-7 range