Most Magic sets take place in their own setting as part of the franchise's multiverse
For Yshtola, it came down to a mix of popularity of the character as well as being a spellcaster, her story and character development offered a wide range of abilities and moments to pull from to lead the deck, Holt explains, going on to say this deck represents her specifically during her Shadowbringers arc
With pretty insane draw capabilities, a ton of tricky ways to work around your opponent by bouncing cards to the hand, granting them reckless, or sending multiple foes to the Inkwell via Spooky Sight, Emerald/Sapphire is a welcome alternative to the more meta-hardened Steel decks that will likely dominate the meta this time around
If, for one of the targets, you can't choose a new legal target, then it remains unchanged (even if the current target is illegal)
At the time of writing, it seems collectors are having a hard time seeing eye to eye on the value for this card, with it bouncing between $140 and $260 in listed prices