I believe this came about because they wanted a mischievous creature on the back that punished the opponent for not having enough cards in their hand, and flavor-wise, that felt a lot like a faerie (it was an imp when it was on Equilor)
Due to entering the battlefield as a land, Arixmethes can offer solid mana ramp while being rather difficult for opponents to remove
Cloudblazer Cloudblazer is like the opposite of Ojutai above
Lacking any form of evasion or the ability to replicate itself with offspring, this one's only real benefit is the ability to pass counters along to another creature later
The Full Upgrade Check out the full deck list here
To start, lets hear her perspective on exactly why these lands were so important to her: Alayna: So when I first got the assignment, they really just asked for a land cycle: make each land fantastical and really speak to its mana color