Threshold — As long as there are seven or more cards in your graveyard, this creature has "When this creature enters, it deals 3 damage to any target."

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

Haste
Threshold — As long as there are seven or more cards in your graveyard, this creature has "When this creature enters, creatures you control get +1/+1 and gain trample until end of turn."

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

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.)

Flash
Threshold — As long as there are seven or more cards in your graveyard, this creature has "When this creature enters, creatures you control gain protection from black until end of turn."

Until end of turn, if target player would draw a card, instead that player skips that draw and you draw a card.

, , Exile two cards from your graveyard: Return target creature card from your graveyard to your hand.

Flying
, Sacrifice Major Teroh: Exile all black creatures.

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

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

Psychotic Haze deals 1 damage to each creature and each player.
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.)

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.

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.)

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

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.

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

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.

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.

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.

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

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

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.)

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.

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.

Target player discards a card for each Swamp you control.

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.)

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.

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.

Flying, first strike

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.

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.