Snuff Out

If you control a Swamp, you may pay 4 life rather than pay this spell's mana cost.
Destroy target nonblack creature. It can't be regenerated.

Tidehollow Strix

Flying
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Ponder

Look at the top three cards of your library, then put them back in any order. You may shuffle.
Draw a card.

Snow-Covered Swamp

Ash Barrens

{T}: Add {C}.
Basic landcycling {1} ({1}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

Cast Down

Brainstorm

Draw three cards, then put two cards from your hand on top of your library in any order.

Echoing Decay

Target creature and all other creatures with the same name as that creature get -2/-2 until end of turn.

Terramorphic Expanse

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

Preordain

Scry 2, then draw a card. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Gurmag Angler

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

Snow-Covered Island

Ice Tunnel

({T}: Add {U} or {B}.)
Ice Tunnel enters tapped.

Thorn of the Black Rose

Deathtouch
When Thorn of the Black Rose enters, you become the monarch.

Diabolic Edict

Target player sacrifices a creature of their choice.