Nyx Weaver is a uncommon Enchantment Creature — Spider card from Commander Masters (CMM), collector number 933. Current market price: $0.29, TCGplayer market prices via Scryfall.
Reach At the beginning of your upkeep, mill two cards. (Put the top two cards of your library into your graveyard.) {1}{B}{G}, Exile this creature: Return target card from your graveyard to your hand.