She is an eight cost, but can shift for six, so can be played down earlier than many of the other tide-changing legendaries.
At least, thats the logic there
The Sanctum Weaver provides the necessary mana
To solve You've cast four or more instant and sorcery spells this turn
Shinkawa will be joining Xenoblade Chronicles character designer Raita Kazama in the endeavor of creating alternate-art versions of Satoru Umezawa, a crime boss of renowned lineage from the plane of existence called Kamigawa, in a setting placed 6,000 or so years after the events of the original block of sets located on the plane
Flavor is the concept of evoking a specific feeling, providing a unique and distinguishable quality to the game and is accomplished either from unique synergy from some cards or even from non-functional parts of cards, such as the illustration or flavor text