Potential Horizon
Land
If you were the starting player, this land enters tapped. , Sacrifice this land: Search your library for a land card with a basic land type, put it onto the battlefield, then shuffle.
colorlessNot legal in Commander
Land
If you were the starting player, this land enters tapped. , Sacrifice this land: Search your library for a land card with a basic land type, put it onto the battlefield, then shuffle.
colorlessNot legal in Commander