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.

Dromoka's Command

Choose two — • Prevent all damage target instant or sorcery spell would deal this turn. • Target player sacrifices an enchantment. • Put a +1/+1 counter on target creature. • Target creature you control fights target creature you don't control.

Virulent Plague

Creature tokens get -2/-2.

Gaea's Revenge

Gaea's Revenge can't be countered. Haste Gaea's Revenge can't be the target of nongreen spells or abilities from nongreen sources.

Tragic Arrogance

For each player, you choose from among the permanents that player controls an artifact, a creature, an enchantment, and a planeswalker. Then each player sacrifices all other nonland permanents he or she controls.

Caves of Koilos

{T}: Add {1} to your mana pool. {T}: Add {W} or {B} to your mana pool. Caves of Koilos deals 1 damage to you.

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.

Ob Nixilis Reignited

Painful Truths

Shambling Vent

Transgress the Mind

Ayli, Eternal Pilgrim

Hissing Quagmire

Kalitas, Traitor of Ghet

Sylvan Advocate

Thought-Knot Seer

Wastes

Anguished Unmaking

Declaration in Stone

The Gitrog Monster

Tireless Tracker

Pulse of Murasa

Return target creature or land card from a graveyard to its owner's hand. You gain 6 life.

Evolving Wilds

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

Plains

({T}: Add {W}.)

Swamp

({T}: Add {B}.)

Forest

({T}: Add {G}.)