Approach of the Second Sun is a rare Sorcery card from Pioneer Challenger Decks 2021 (Q06), collector number 1. Current market price: $8.16, TCGplayer market prices via Scryfall.
If this spell was cast from your hand and you've cast another spell named Approach of the Second Sun this game, you win the game. Otherwise, put Approach of the Second Sun into its owner's library seventh from the top and you gain 7 life.