Den Protector

Creatures with power less than Den Protector's power can't block it. Megamorph {1}{G} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1/+1 counter on it.) When Den Protector is turned face up, return target card from your graveyard to your hand.

Dig Through Time

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.) Look at the top seven cards of your library. Put two of them into your hand and the rest on the bottom of your library in any order.

Disdainful Stroke

Counter target spell with converted mana cost 4 or greater.

Murderous Cut

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.) Destroy target creature.

Reclamation Sage

When Reclamation Sage enters the battlefield, you may destroy target artifact or enchantment.

Dark Petition

Search your library for a card and put that card into your hand. Then shuffle your library. Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, add {B}{B}{B} to your mana pool.

Languish

All creatures get -4/-4 until end of turn.

Urborg, Tomb of Yawgmoth

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

Bloodstained Mire

Flooded Strand

Polluted Delta

Canopy Vista

Cinder Glade

Ob Nixilis Reignited

Ruinous Path

Smoldering Marsh

Sunken Hollow

Satyr Wayfinder

Grasp of Darkness

Hissing Quagmire

Kalitas, Traitor of Ghet

Void Shatter

To the Slaughter

Traverse the Ulvenwald

Ishkanah, Grafwidow

Liliana, the Last Hope

Essence Extraction

Lost Legacy

Revolutionary Rebuff

Torrential Gearhulk

Negate

Counter target noncreature spell.

Duress

Target opponent reveals their hand. You choose a noncreature, nonland card from it. That player discards that card.

Dead Weight

Enchant creature Enchanted creature gets -2/-2.

Island

({T}: Add {U}.)

Swamp

({T}: Add {B}.)