Other than being able to manipulate permenants and sitting in the most pillowy fort adjacent color combination, Derevi can simply ignore Commander tax
It is the first to card to have: The sentence You cant play cards from your hand in its rules text The latest templating for being able to look at the top card of your library An activated ability whose sole purpose is to destroy its host card The word coffee in its flavor text (Flavor text isnt usually a concern when evaluating card design, but its a nice touch.) All these abilities are straightforward to understand, but just unusual enough to pique the interest of Johnny/Jenny players
In a dedicated Soldier deck, it's easy to see Myrel commonly summoning up to four Soldier tokens or more if she manages to go to combat even once
Itll increase the clock quite a bit, and having to get rid of it with Lightning Bolt or Path to Exile is almost insulting
Consider this Duskmourn Overlord a weak removal spell that suspends a legit wincon, and if you can cast it for the full amount, all the better
The entire FINAL FANTASY saga is here