Holy Ground: Gaea's Cathedral

Covenant — Each nonland card in your starting
deck is green and/or is an artifact. (If this card is
your chosen covenant, you may begin the game with it in your hand. Shuffle another card from your hand back into your library.)

You cannot play spells. Your life total cannot change.

At the end of your turn, if any player has 4 lands,
you gain 2 life. Shuffle this card back into your library.