Land Break, Runescript

Each player may play an additional land each turn.
Whenever an additional land enters battle under
a player's control, they mill two cards.
Paranoia—As long as a player has four or more
types among the cards in their graveyard, during
their turn, replace all instances of "may" with
"must" and whenever additional land enters the battlefield under that player's control, they
return a land back to their hand.