There are many cards that trigger self-mill as soon as they enter the battlefield, or look at the top cards of your deck and put one in the hand and the rest in the graveyard
Finally, checking in on Final Fantasy itself: prices of singles are down across the board this week
Mana Crypt [Best Zero-Cost Artifact for Early Mana Advantage] Mana Crypt costs zero and taps for two colorless mana right away
What abilities do they have? To answer these questions, they watch movies and shows multiple times, carefully observing details, taking notes, and looking for anything that can inspire a card
Entering the battlefield with two additional bodies is slight overkill for Celebration triggers, so this card is most efficient for Rat sacrifice builds and might get bulked up into a semi-evasive finisher, something every "aristocrat" deck needs