Since Sisay is a commander that gets rather large over time, making her unblockable is a great alternate win-condition to sneak into the mix
You can reach a bit and talk about how being able to return a creature to their owners hand is putting it to sleep or something, but the truth is that this is a great line on a pretty average card
Since then, other cycles of tutors have been printed, and they often use the same naming convention
In fact, I liked the ability so much in this deck that I also added Leyline of Anticipation
Luckily, its not beneath my subjects. Gulistan, Simic biomancer Illustrated by Dominik Mayer Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Not Legal Brawl Not Legal Legacy Legal Comp
Adventure is on the horizon with the newest Disney Lorcana TCG set, Into the Inklands