Orochi Colony is a common Plane — Kamigawa card from Planechase 2012 Planes (OPC2), collector number 29. Current market price: $2.54, TCGplayer market prices via Scryfall.
Whenever a creature you control deals combat damage to a player, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle. Whenever chaos ensues, target creature can't be blocked this turn.