Isperia the Inscrutable is a rare Legendary Creature — Sphinx card from RNA Guild Kit (GK2), collector number 13. Current market price: $0.33, TCGplayer market prices via Scryfall.
Flying Whenever Isperia deals combat damage to a player, choose a card name. That player reveals their hand. If a card with the chosen name is revealed this way, search your library for a creature card with flying, reveal it, put it into your hand, then shuffle.