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.

Golgari Grave-Troll enters the battlefield with a +1/+1 counter on it for each creature card in your graveyard.
, Remove a +1/+1 counter from Golgari Grave-Troll: Regenerate Golgari Grave-Troll.
Dredge 6

Flying
Whenever Stinkweed Imp deals combat damage to a creature, destroy that creature.
Dredge 5

When Ingot Chewer enters the battlefield, destroy target artifact.
Evoke

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.

: Add to your mana pool.
Any time you could mulligan and Serum Powder is in your hand, you may exile all the cards from your hand, then draw that many cards. (You can do this in addition to taking mulligans.)

Name a nonland card. Target player reveals his or her hand and discards all cards with that name.
Flashback - Sacrifice a creature.

If Leyline of the Void is in your opening hand, you may begin the game with it on the battlefield.
If a card would be put into an opponent's graveyard from anywhere, exile it instead.

: Add one mana of any color to your mana pool. During your next untap step, as you untap your permanents, return Undiscovered Paradise to its owner's hand.

Whenever City of Brass becomes tapped, it deals 1 damage to you.
: Add one mana of any color to your mana pool.

: Add to your mana pool.
, Sacrifice Petrified Field: Return target land card from your graveyard to your hand.

: Draw two cards, then discard three cards.

Flying
When Narcomoeba is put into your graveyard from your library, you may put it onto the battlefield.

Haste
At the beginning of the end step, sacrifice Ichorid.
At the beginning of your upkeep, if Ichorid is in your graveyard, you may exile a black creature card other than Ichorid from your graveyard. If you do, return Ichorid to the battlefield.

Target creature gets -1/-1 until end of turn.
Dredge 3

When Golgari Thug dies, put target creature card from your graveyard on top of your library.
Dredge 4

Destroy target artifact.
Flashback

Return target nonland permanent to its owner's hand. Then that permanent's controller may sacrifice a land. If the player does, he or she may copy this spell and may choose a new target for that copy.

You may exile a black card from your hand rather than pay Unmask's mana cost.
Target player reveals his or her hand. You choose a nonland card from it. That player discards that card.

Flying
When Wispmare enters the battlefield, destroy target enchantment.
Evoke

Destroy target artifact or enchantment. Its controller gains 4 life.