{X}: Crypt Rats deals X damage to each creature and each player. Spend only black mana on X.

Flying (This creature can't be blocked except by creatures with flying or reach.) {5}{B}{B}: Return target creature card from your graveyard to the battlefield tapped.

All Rats have fear. {T}, Sacrifice a Rat: Create X 1/1 black Rat creature tokens, where X is the number of Rats you control.

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

Pack Rat's power and toughness are each equal to the number of Rats you control. {2}{B}, Discard a card: Create a token that's a copy of Pack Rat.

Rats you control have menace. {1}{B}, {T}: Create a 1/1 black Rat creature token. {2}{B}{B}, {T}, Sacrifice three Rats: Gain control of target creature.

{T}: Target blocking creature gets -1/-1 until end of turn.

Rat Colony gets +1/+0 for each other Rat you control. A deck can have any number of cards named Rat Colony.

{B}: Destroy target artifact, creature, or land you control.

Draw three cards, then put two cards from your hand on top of your library in any order.

Put any number of target creature cards from your graveyard on top of your library. Draw a card.

({T}: Add {U}.)

Return target black creature card from your graveyard to your hand. Madness {0} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Surveil 5. (Look at the top five cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Replicate {1}{U} (When you cast this spell, copy it for each time you paid its replicate cost.) Draw a card.

Enchant creature card in a graveyard When Animate Dead enters the battlefield, if it's on the battlefield, it loses "enchant creature card in a graveyard" and gains "enchant creature put onto the battlefield with Animate Dead." Return enchanted creature card to the battlefield under your control and attach Animate Dead to it. When Animate Dead leaves the battlefield, that creature's controller sacrifices it. Enchanted creature gets -1/-0.

Put any number of target creature cards from your graveyard on top of your library. Draw a card at the beginning of the next turn's upkeep.

Return X target creature cards from your graveyard to your hand.

Flash When Omen of the Dead enters the battlefield, return target creature card from your graveyard to your hand. {2}{B}, Sacrifice Omen of the Dead: Scry 2.

Return target creature card with mana value X or less from your graveyard to the battlefield.

You may cast Twilight's Call as though it had flash if you pay {2} more to cast it. (You may cast it any time you could cast an instant.) Each player returns all creature cards from their graveyard to the battlefield.

{B}, {T}, Discard a card: Return target creature card from your graveyard to your hand.