Isolated Watchtower is a rare Land card from Commander 2018 (C18), collector number 59. Current market price: $1.25, TCGplayer market prices via Scryfall.
{T}: Add {C}. {2}, {T}: Scry 1, then you may reveal the top card of your library. If a basic land card is revealed this way, put it onto the battlefield tapped. Activate only if an opponent controls at least two more lands than you.