First strike
: This creature gets +1/+1 until end of turn.

Flying
Threshold — As long as there are seven or more cards in your graveyard, this creature has "When this creature enters, nonblack creatures get -2/-2 until end of turn."

Return target creature and target land to their owners' hands.

When this creature enters, you gain 4 life.

, , Sacrifice this creature: Destroy target enchantment.
Threshold — This creature gets +1/+1 as long as there are seven or more cards in your graveyard.

Whenever a permanent other than this enchantment is put into a graveyard from the battlefield, this enchantment deals 1 damage to each creature and each player.
When no creatures are on the battlefield, sacrifice this enchantment.

As an additional cost to cast this spell, discard X cards.
Search your library for X cards, then shuffle and put those cards on top in any order.

You gain life equal to the number of creature cards in all graveyards.

Tap target untapped creature you control. If you do, it deals damage equal to its power to target attacking or blocking creature an opponent controls.
Flashback—, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)
: Target black creature gets -2/-0 until end of turn.

Violent Eruption deals 4 damage divided as you choose among any number of targets.
Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

When this creature enters, exile target land.
When this creature leaves the battlefield, return the exiled card to the battlefield under its owner's control.

Choose target instant or sorcery spell that targets only a single permanent or player. Copy that spell for each other permanent or player the spell could target. Each copy targets a different one of those permanents and players.

At the beginning of your upkeep, you lose 1 life.
At the beginning of your upkeep, you may return target creature card from your graveyard to the battlefield. That creature gains haste until end of turn. Exile it at the beginning of the next end step.

Flying
, Sacrifice this creature: Counter target spell that targets a creature you control.

Trample
Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever a creature dealt damage by this creature this turn dies, put a +1/+1 counter on this creature.

Target player discards a card for each Swamp you control.

Whenever this creature attacks or blocks, any player may exile three cards from their graveyard. If a player does, this creature assigns no combat damage this turn.

All Nightmares get +1/+1.
, Pay 3 life: Put target creature card from a graveyard onto the battlefield under your control. That creature is black and is a Nightmare in addition to its other creature types.
When Chainer leaves the battlefield, exile all Nightmares.

Flying
When this creature enters, target player loses 3 life.
When this creature leaves the battlefield, that player gains 3 life.

Whenever this creature deals combat damage to a creature, destroy that creature. It can't be regenerated.
Discard a card: This creature gains flying and protection from green and from white until end of turn.

For each creature token on the battlefield, its controller creates a token that's a copy of that creature.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

As an additional cost to cast this spell, discard a card.
Target creature gets -5/-5 until end of turn.

Whenever this creature becomes the target of a spell or ability, mill two cards.

Discard a card at random: This creature gets +1/+0 and gains first strike until end of turn.

At the beginning of your upkeep, sacrifice this creature unless you put two cards from your graveyard on the bottom of your library.
, Discard a card: You may have this creature assign its combat damage this turn as though it weren't blocked.

Trample
, Discard a card: Regenerate this creature.

When this creature enters, target player loses 6 life.
When this creature leaves the battlefield, that player gains 6 life.
: Regenerate this creature.

You don't lose the game for having 0 or less life.
When you have 20 or more life, you lose the game.
Whenever you lose life, you gain 2 life for each 1 life you lost. (Damage dealt to you causes you to lose life.)

Kamahl's Sledge deals 4 damage to target creature.
Threshold — If there are seven or more cards in your graveyard, instead Kamahl's Sledge deals 4 damage to that creature and 4 damage to that creature's controller.

When this creature enters, flip a coin until you lose a flip. Put a +1/+1 counter on this creature for each flip you won.

Flying, first strike

When this creature enters, exile two target lands.
When this creature leaves the battlefield, return the exiled cards to the battlefield under their owners' control.
: This creature gets +1/+0 until end of turn.

Flying
When this creature enters, if you cast it from your hand, exile all cards from target opponent's hand.
When this creature leaves the battlefield, return the exiled cards to their owner's hand.