Banish 1 Fiend monster or 1 "Archfiend" card from your hand or GY
The +1 draws an artifact each time you use it, and since you are digging five cards down, you almost always find something useful
That ability is "when the last defense counter is removed from this permanent, exile it, then you may cast it transformed without paying its mana cost." This means that if for any reason a battle enters the battlefield without defense counters, it will be put into the graveyard and its controller will not get the chance to exile it
In that way, it winds up being a really fun card to play that leans into the themes of Edge of Eternities
However, at a certain point of the Duel, Yuma asks her why is she so obsessed in winning and serving Mr
Rather than feature cards from one corresponding Japanese set which had traditionally been the case this offering showcases singles from a number of sources