Holy Ground: Keldon Cathedral

Covenant — Each nonland card in your starting
deck is red and/or is an artifact. (If this card is
your chosen covenant, you may begin the game
with it in your hand.)

You cannot play spells, and your life total cannot change. You cannot lose the game.

At the end of your turn, if any player has 4 lands, this card does 1 damage to any target. Shuffle this card and a card from your hand into your library.