it's about the feeling of a specific era that has become unreachable except through objects
I understand that you need to run four colors to pull this off, and Im not sure if Standard has either the manabase or the cantrips to try to move in on that approach, but Modern should easily have all the necessary tools available (not really considering it for Legacy as combo decks have a much higher bar to climb there, what with Tendrils of Agony and Show and Tell alive and kicking)
Additionally, it allows Gisela to display a more exaggerated expression, helping convey the emotion of the card
Angel of indemnity, Guardian Scalelord, and Sun Titan all return permanents with a certain mana value to the Battlefield from the Graveyard
The deck performs pretty well out of the box
1 Anafenza, Kin-Tree Spirit