This kind of value is brutal if you replay Magus Sisters in any way
On the one hand it does not power up your delve, threshold, flashback etc but on the other hand it gives you much more safety and ultimately information
That's because after lots of science (aka deck-building sessions), the best players and deck builders have realized that the majority of cards in an aggro deck should be focused on one thing: killing the opponent quickly
The buff Don Andres gives to stolen creatures as well as the Treasure tokens he generates when you cast noncreature spells that don't belong to you are nice, but they're far from enough to make stealing cards worthwhile (especially because the treasures enter tapped)
As it does the same for the opponent, it can also be used to ruin their current strategy
Holt says that while Final Fantasy 7 and 14 were clearer picks, 6 and 10 took more discussion to arrive at, but were chosen partially because they were favorites among the team