Gravecrawler

Gravecrawler can't block. You may cast Gravecrawler from your graveyard as long as you control a Zombie.

Viscera Seer

Sacrifice a creature: Scry 1. (To scry 1, look at the top card of your library, then you may put that card on the bottom of your library.)

Bridge from Below

Whenever a nontoken creature is put into your graveyard from the battlefield, if Bridge from Below is in your graveyard, put a 2/2 black Zombie creature token onto the battlefield. When a creature is put into an opponent's graveyard from the battlefield, if Bridge from Below is in your graveyard, exile Bridge from Below.

Vengevine

Haste Whenever you cast a spell, if it's the second creature spell you cast this turn, you may return Vengevine from your graveyard to the battlefield.

Blackcleave Cliffs

Blackcleave Cliffs enters the battlefield tapped unless you control two or fewer other lands. {T}: Add {B} or {R} to your mana pool.

Thoughtseize

Target player reveals his or her hand. You choose a nonland card from it. That player discards that card. You lose 2 life.

Greater Gargadon

Suspend 10—{R} Sacrifice an artifact, creature, or land: Remove a time counter from Greater Gargadon. Play this ability only if Greater Gargadon is suspended.

Bloodghast

Bloodghast can't block. Bloodghast has haste as long as an opponent has 10 or less life. Landfall — Whenever a land enters the battlefield under your control, you may return Bloodghast from your graveyard to the battlefield.

Goblin Bushwhacker

Kicker {R} (You may pay an additional {R} as you cast this spell.) When Goblin Bushwhacker enters the battlefield, if it was kicked, creatures you control get +1/+0 and gain haste until end of turn.

Bloodstained Mire

Overgrown Tomb

Verdant Catacombs

Faithless Looting

Insolent Neonate

Collective Brutality

Walking Ballista

Blood Crypt

({T}: Add {B} or {R}.) As Blood Crypt enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Stomping Ground

({T}: Add {R} or {G}.) As Stomping Ground enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Swamp

({T}: Add {B}.)

Mountain

({T}: Add {R}.)