They speak to the player who doesn't just play the game, but lives it
I dont think the combo will ever be more than fringe playable, though, and actual demand for this card has always felt softer to me than the price would indicate
Back Sephiroth, One-Winged Angel Legendary Creature - Angel Nightmare Avatar Flying Super Nova - As this creature transforms into Sephiroth, One-Winged Angel, you get an emblem with "Whenever a creature dies, target opponent loses 1 life and you gain 1 life." Whenever Sephiroth attacks, you may sacrifice any number of other creatures
Taps for white, blue, or red, and the basic land types it has enable additional synergies with other lands in the deck
Thankfully, her mechanic is good enough to see her in play every now and then, but it's in no way a chase card or a draft bomb