From the Vault: Realms

Boseiju, Who Shelters All enters the battlefield tapped.

, Pay 2 life: Add  to your mana pool. If that mana is spent on an instant or sorcery spell, that spell can't be countered by spells or abilities.

: Add  to your mana pool. Cephalid Coliseum deals 1 damage to you.

Threshold -- , , Sacrifice Cephalid Coliseum: Target player draws three cards, then discards three cards from his or her hand. (Play this ability only if seven or more cards are in your graveyard.)

(Dryad Arbor isn't a spell, it's affected by summoning sickness, and it has ": Add  to your mana pool.") 

Dryad Arbor is Green.

: Add one mana of any color to your mana pool.

Whenever you tap Forbidden Orchard for mana, target opponent puts a 1/1 colorless Spirit creature token onto the battlefield.

Cumulative upkeep—Pay 2 life.

When Glacial Chasm enters the battlefield, sacrifice a land.

Creatures you control can't attack.

Prevent all damage that would be dealt to you.

: Untap target attacking creature. Prevent all combat damage that would be dealt to and dealt by that creature this turn.

(: Add  to your mana pool.)

As Murmuring Bosk enters the battlefield, you may reveal a Treefolk card from your hand. If you don't, Murmuring Bosk enters the battlefield tapped.

: Add  or  to your mana pool. Murmuring Bosk deals 1 damage to you.

You may have Vesuva enter the battlefield tapped as a copy of any land on the battlefield.

Hideaway (This land enters the battlefield tapped. When it does, look at the top four cards of your library, exile one face down, then put the rest on the bottom of your library.)

: Add  to your mana pool.

, : You may play the exiled card without paying its mana cost if you attacked with three or more creatures this turn.