Flying
Whenever you draw your second card each turn, target opponent sacrifices a nontoken creature of their choice.

Target player chooses a card in their hand and discards the rest.

Target player draws X cards and loses X life, where X is the number of artifacts you control.

Look at the top five cards of your library. For each card, put that card into your graveyard unless you pay 2 life. Then put the rest into your hand.

Flying
Whenever a creature an opponent controls dies, you create a Blood token.
Whenever you sacrifice an artifact, put a +1/+1 counter on this creature and you gain 1 life.

Flying
Cumulative upkeep — Pay 1 life.

Morbid — When this creature enters, if a creature died this turn, target creature gets -4/-4 until end of turn.

Flash
When this creature enters, change the target of target spell that targets only a single creature to this creature.
Madness

Cast this spell only during your end step.
As an additional cost to cast this spell, pay X life.
Draw X cards.

Flash
Synaptic Disintegrator — When this creature enters, destroy up to one target creature and target player mills three cards.

Whenever a source deals damage to this creature, create a 2/2 black Phyrexian Zombie creature token.

Choose one —
• Exile each creature with power greater than the number of cards in your hand.
• Exile each creature with power less than the number of cards in your hand.

This creature gets +1/+0 for each artifact you control.
: Return this card from your graveyard to the battlefield, then sacrifice a creature. Activate only during your upkeep.

Whenever this creature or another Zombie enters, all non-Zombie creatures get -1/-1 until end of turn.

Landfall — Whenever a land you control enters, you may have target player lose 3 life. If you do, put three +1/+1 counters on Ob Nixilis.

Whenever another nontoken creature dies, you may create a 1/1 black Rat creature token.
Rats you control have deathtouch.

Ninjutsu
Whenever this creature deals combat damage to a player, that player discards two cards.

Flying
Old-Fashioned Vampire gets +2/+2 and has deathtouch as long as it's dark outdoors.

Whenever a nontoken creature you control dies, create a 2/2 black Zombie creature token.

Impending 5 —
Whenever this permanent enters or attacks, mill four cards, then you may return a non-Avatar creature card or a planeswalker card from your graveyard to your hand.

Whenever an opponent casts a spell, that player loses 5 life unless they discard a card.

Fear
At the beginning of your upkeep, sacrifice a creature if you don't control an Ogre.

As this enchantment enters, choose Khans or Dragons.
• Khans — At the beginning of your upkeep, return target creature card from your graveyard to your hand.
• Dragons — At the beginning of your upkeep, each opponent loses 2 life and you gain 2 life.

Each player chooses a creature type. Each player returns all creature cards of a type chosen this way from their graveyard to the battlefield.

When this creature enters, return target creature card from your graveyard to the battlefield. You lose life equal to that card's mana value.

, Sacrifice this creature: Target creature gets -4/-4 until end of turn.
Sacrifice a creature: Target creature gets -1/-1 until end of turn.