Sigarda, Champion of Light is a mythic Legendary Creature — Angel card from Innistrad: Midnight Hunt Promos (PMID), collector number 240p. Current market price: $1.98 (foil $0.54), TCGplayer market prices via Scryfall.
Flying, trample Humans you control get +1/+1. Coven — Whenever Sigarda attacks, if you control three or more creatures with different powers, look at the top five cards of your library. You may reveal a Human creature card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.