: Add . Ancient Tomb deals 2 damage to you.

: Add . Cephalid Coliseum deals 1 damage to you.

Threshold — , , Sacrifice Cephalid Coliseum: Target player draws three cards, then discards three cards. Activate 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 .")

Cumulative upkeep—Pay 2 life. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

When Glacial Chasm enters, sacrifice a land.

Creatures you control can't attack.

Prevent all damage that would be dealt to you.

: Add .

, Sacrifice a creature: You gain 1 life.

(: Add .)

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

: Add or . Murmuring Bosk deals 1 damage to you.

Each land is a Swamp in addition to its other land types.

Hideaway 4 (When this land enters, look at the top four cards of your library, exile one face down, then put the rest on the bottom in a random order.)

Windbrisk Heights enters tapped.

: Add .

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