As an additional cost to cast this spell, sacrifice any number of creatures.
Create an X/X blue and black Zombie creature token with menace, where X is the total power of the sacrificed creatures.
Flashback (You may cast this card from your graveyard for its flashback cost and any additional costs. Then exile it.)

Destroy target creature with power 2 or less. Investigate. (Create a Clue token. It's an artifact with ", Sacrifice this token: Draw a card.")

Whenever you sacrifice another creature, you gain 1 life and scry 1. (Look at the top card of your library. You may put that card on the bottom.)
, Sacrifice another creature: This creature gets +2/+2 until end of turn.

This creature can't block.
When this creature dies, return it to the battlefield transformed under your control attached to target creature or planeswalker an opponent controls.

, , Pay 1 life, Discard a card: Draw a card, mill a card, then put a ritual counter on this artifact. Then if it has three or more ritual counters on it, remove them and transform it. Activate only as a sorcery.

: Add one mana of any color.
: Add two mana of any one color. Spend this mana only to cast spells from your graveyard.
, , Exile this creature: Return target card with flashback you own from exile to your hand.

Whenever you cast an enchantment spell, you gain 2 life.

Destroy target creature. You lose 2 life.

This artifact enters with three omen counters on it.
, : Look at the top two cards of your library. Put one of them into your graveyard.
Whenever a creature card is put into your graveyard from anywhere, remove an omen counter from this artifact. Then if it has no omen counters on it, transform it.

Whenever this creature deals combat damage to a player, draw a card.
Disturb (You may cast this card from your graveyard transformed for its disturb cost.)

Disturb (You may cast this card from your graveyard transformed for its disturb cost.)

You gain 2 life, draw two cards, then discard two cards.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

, Sacrifice this creature: Destroy target artifact or enchantment.
Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

Defender
: This creature deals 1 damage to each opponent.
Whenever you cast an instant or sorcery spell, untap this creature.

When this artifact enters, create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this token: Draw a card.")
Whenever you sacrifice a Blood token, you may have this artifact become a 3/3 Vampire artifact creature with haste until end of turn.

Menace (This creature can't be blocked except by two or more creatures.)
When this creature enters, if an opponent lost life this turn, put a +1/+1 counter on each other Vampire you control.
As long as an opponent lost life this turn, each other Vampire you control enters with an additional +1/+1 counter on it.

If an opponent has more life than you, you gain 4 life.
If an opponent controls more creatures than you, create two 1/1 white Human creature tokens.
If an opponent has more cards in hand than you, draw a card.

When this creature enters, you may search your library for a basic Plains card, reveal it, put it into your hand, then shuffle.
Coven — : Transform this creature. Activate only if you control three or more creatures with different powers.

Sacred Fire deals 2 damage to any target and you gain 2 life.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Look at the top four cards of your library. You may reveal an instant or sorcery card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

When a spell you control deals damage, transform this creature.

When this creature dies, mill three cards. (Put the top three cards of your library into your graveyard.)
Disturb (You may cast this card from your graveyard transformed for its disturb cost.)

Create two 1/1 white Human creature tokens.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Tap three untapped creatures you control: Tap target creature.

Cleave (You may cast this spell for its cleave cost. If you do, remove the words in square brackets.)
Parasitic Grasp deals 3 damage to target [Human] creature. You gain 3 life.

Cleave (You may cast this spell for its cleave cost. If you do, remove the words in square brackets.)
Return target [Wolf or Werewolf] creature to its owner's hand.
Draw a card.

This creature enters with X +1/+1 counters on it.
If damage would be dealt to this creature while it has a +1/+1 counter on it, prevent that damage and remove that many +1/+1 counters from it. When one or more counters are removed from this creature this way, it deals that much damage to any target.

At the beginning of combat on your turn, if you control another Wolf or Werewolf, put a +1/+1 counter on this creature.
When this creature dies, you gain life equal to its power.

Enchant creature
Enchanted creature has "Whenever another creature dies, put a +1/+1 counter on this creature."
When enchanted creature dies, look at the top X cards of your library, where X is its power. Put one of those cards into your hand and the rest on the bottom of your library in a random order.

Whenever one or more nontoken creatures die, create a 2/2 black Zombie creature token with decayed. This ability triggers only once each turn. (A creature with decayed can't block. When it attacks, sacrifice it at end of combat.)

Create a 3/1 black and red Vampire creature token with trample, lifelink, and haste. Sacrifice it at the beginning of the next end step.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Equipped creature gets +2/+0. It gets an additional +0/+2 and has first strike as long as an Equipment named Groom's Finery is attached to a creature you control.
Equip (: Attach to target creature you control. Equip only as a sorcery.)

It becomes night. Until end of turn, target creature gets +1/+0 and gains trample and "Whenever this creature deals combat damage to a player, draw a card."
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Whenever this creature attacks, add or . Until end of turn, you don't lose this mana as steps and phases end.
Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

Double strike
Disturb (You may cast this card from your graveyard transformed for its disturb cost.)

When this enchantment enters, exile target creature an opponent controls with mana value 3 or less until this enchantment leaves the battlefield.
Whenever an opponent casts a Vampire spell with the same name as a card exiled with this enchantment, you gain 2 life.