Orzhova is a common Plane — Ravnica card from Planechase 2012 Planes (OPC2), collector number 30. Current market price: $2.67, TCGplayer market prices via Scryfall.
When you planeswalk away from Orzhova, each player returns all creature cards from their graveyard to the battlefield. Whenever chaos ensues, for each opponent, exile up to one target creature card from that player's graveyard.