Honestly, I am slightly surprised that it has been given such a steep mana cost for its small stats, that makes me think that Blue-White might have been slightly too strong in Wizards' internal testing, so I am excited to try out this archetype
Its not very often you can take an entire piece of folklore and illustrate it into a landscape, but thats exactly what we have here
You can exile the crafted card after craft resolves and the transformed permanent enters play
This is the cog that makes the whole thing work
The only exception would be if multiple effects that altered a Creature type were in play at the same time, particularly if they're using replacement effects (i.e., changing a Creature's type from one to another)
Which deck is for you will largely depend on the cards you have available to you, but in our opinion, a Dragonite Water-type deck is the best route to go down if you have some Water-type ex Pokemon