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.

Caustic Caterpillar

{1}{G}, Sacrifice Caustic Caterpillar: Destroy target artifact or enchantment.

Gilt-Leaf Winnower

Menace (This creature can't be blocked except by two or more creatures.) When Gilt-Leaf Winnower enters the battlefield, you may destroy target non-Elf creature whose power and toughness aren't equal.

Infinite Obliteration

Name a creature card. Search target opponent's graveyard, hand, and library for any number of cards with that name and exile them. Then that player shuffles his or her library.

Languish

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

Llanowar Wastes

{T}: Add {1} to your mana pool. {T}: Add {B} or {G} to your mana pool. Llanowar Wastes deals 1 damage to you.

Hedron Archive

Ob Nixilis Reignited

Ruinous Path

Elvish Visionary

Grasp of Darkness

Hissing Quagmire

Pick the Brain

To the Slaughter

Traverse the Ulvenwald

Emrakul, the Promised End

Ishkanah, Grafwidow

Liliana, the Last Hope

Murder

Destroy target creature.

Dead Weight

Enchant creature Enchanted creature gets -2/-2.

Evolving Wilds

{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle your library.

Swamp

({T}: Add {B}.)

Forest

({T}: Add {G}.)