Worldly Counsel is a common Instant card from Conflux (CON), collector number 39. Current market price: $0.06 (foil $0.34), TCGplayer market prices via Scryfall.
Domain — Look at the top X cards of your library, where X is the number of basic land types among lands you control. Put one of those cards into your hand and the rest on the bottom of your library in any order.