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.

Languish

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

Nissa, Vastwood Seer/Nissa, Sage Animist

When Nissa, Vastwood Seer enters the battlefield, you may search your library for a basic Forest card, reveal it, put it into your hand, then shuffle your library. Whenever a land enters the battlefield under your control, if you control seven or more lands, exile Nissa, then return her to the battlefield transformed under her owner's control. ——— +1: Reveal the top card of your library. If it's a land card, put it onto the battlefield. Otherwise, put it into your hand.?2 : Put a legendary 4/4 green Elemental creature token named Ashaya, the Awoken World onto the battlefield. ?7: Untap up to six target lands. They become 6/6 Elemental creatures. They're still lands.

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.

Ruinous Path

Transgress the Mind

Grasp of Darkness

Hissing Quagmire

Sylvan Advocate

Mindwrack Demon

Tireless Tracker

Traverse the Ulvenwald

Grim Flayer

Ishkanah, Grafwidow

Liliana, the Last Hope

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.

Swamp

({T}: Add {B}.)

Forest

({T}: Add {G}.)