You can even use this in a race to stymie a bit of damage before swinging for the win
and if you play a land from the top of your library, you can't look at the next card until you're done handling any replacement effects that modify how that land enters the battlefield (such as that of Vesuva)
Her ultimate is also good, in theory
Even if the Saheeli Rai has been on the battlefield a few turns and has enough loyalty to survive a Shock immediately, after the Guardian Flickers the Sahelli back onto the battlefield, it will no longer survive the Shock, which makes having access to the red instant at all times vital
Real Magic cards will recover from being bent (even as harshly as in the picture below)
[63] Additionally, the WPN maintains a set of rules for being able to sanction tournaments, as well as runs its own circuit