Kylox, Visionary Inventor is a rare Legendary Creature — Lizard Artificer card from Murders at Karlov Manor Promos (PMKM), collector number 214s. Current market price: — (foil $0.44), TCGplayer market prices via Scryfall.
Menace, ward {2}, haste Whenever Kylox attacks, sacrifice any number of other creatures, then exile the top X cards of your library, where X is their total power. You may cast any number of instant and/or sorcery spells from among the exiled cards without paying their mana costs.