Chestnut Roast

Landfall —Whenever a land enters the
battlefield under your control, exile the top
card of your library. You may play that card
for as long as it remains exiled.
At the beginning of your end step, if there
are cards exiled with Chestnut Roast,
put them into their owner's graveyard, then
Chestnut Roast deals that much
damage to each opponent.