Visage of Bolas is a rare Artifact card from Hour of Devastation (HOU), collector number 208. Current market price: $0.32, TCGplayer market prices via Scryfall.
When this artifact enters, you may search your library and/or graveyard for a card named Nicol Bolas, the Deceiver, reveal it, and put it into your hand. If you search your library this way, shuffle. {T}: Add {U}, {B}, or {R}.