Spineseeker Centipede is a common Creature — Insect card from Duskmourn: House of Horror (DSK), collector number 199. Current market price: $0.17 (foil $0.20), TCGplayer market prices via Scryfall.
When this creature enters, search your library for a basic land card, reveal it, put it into your hand, then shuffle. Delirium — This creature gets +1/+2 and has vigilance as long as there are four or more card types among cards in your graveyard.