Curse of Feast and Famine

Enchant target player.
Enchanted player loses 1 life for each land they
tap for mana.
On the enchanted player's end step, they must
choose one of the following for each untapped
land they control: Exile a non-land permanent
they control; destroy the untapped land they
control or discard a card for each untapped
land.
If they cannot do this, each other player gets to
draw two cards and then discard one.