It gathers against the coming storm
If Rajah is chosen and moves to the hand, Vanish will activate, but since Rajah is no longer in play, it wont have any impact
Honestly, thats my usual play, but the presale price I got for buying the decks blind was a little too good
But at the end of the day, it's always going to have value because this is a game about creatures attacking and blocking, and this will do so very nicely, either as a 4/4 flying haste-ed one, or just a 5/5 flying that can also shoot stuff if properly en-countered (say, by putting the counter on and not immediately swinging)
You can also evolve a basic normally, then use Wallys on the same turn to evolve it to a stage two
Green and red seem to make the better modified-centric decks thanks to Invigorating Hot Spring