Furnace Layer is a common Plane — New Phyrexia card from Planechase Anthology Planes (OPCA), collector number 26. Current market price: $2.13, TCGplayer market prices via Scryfall.
When you planeswalk to Furnace Layer and at the beginning of your upkeep, select target player at random. That player discards a card. If that player discards a land card this way, they lose 3 life. Whenever chaos ensues, you may destroy target nonland permanent.