Uncle's Musings is a rare Sorcery card from Avatar: The Last Airbender Eternal (TLE), collector number 73. Current market price: $0.67 (foil $0.46), TCGplayer market prices via Scryfall.
Converge — Return up to X permanent cards from your graveyard to your hand, where X is the number of colors of mana spent to cast this spell. Exile Uncle's Musings.