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: Exile target card from an opponent's graveyard. If no cards are in that graveyard, flip this creature.

Exile X target cards from a single graveyard.

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

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
This creature can't block.

Swarm of Rats's power is equal to the number of Rats you control.

Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever this creature deals combat damage to a player, exile up to two target cards from that player's graveyard.

, Sacrifice a creature: Target player discards a card. Activate only as a sorcery.

All creatures gain fear until end of turn. (They can't be blocked except by artifact creatures and/or black creatures.)
Cycling (, Discard this card: Draw a card.)
When you cycle this card, you may have target creature gain fear until end of turn.

When this creature enters, target opponent puts a card from their hand on top of their library.

At the beginning of your upkeep, target opponent may exile a card from their graveyard. If that player doesn't, you may draw a card.

: This creature deals X damage to each creature and each player. Spend only black mana on X.

Target creature gets -2/-2 until end of turn.
Flashback—, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Target player exiles all cards from their hand face down. At the beginning of the end step of that player's next turn, that player returns those cards to their hand.

Draw four cards. You lose half your life, rounded up.

, Discard a card: Regenerate this creature.
Threshold — As long as seven or more cards are in your graveyard, this creature gets +2/+2 and can't block.

Black creatures get +2/+0 until end of turn.

Search your library for a card, put that card into your hand, then shuffle.

Whenever a creature you control deals combat damage to a player, that player discards a card.

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

Destroy target nonblack creature. It can't be regenerated. You gain life equal to its toughness.

Choose one —
• Destroy target creature.
• Return target creature card from your graveyard to the battlefield.
Entwine—Sacrifice three lands. (Choose both if you pay the entwine cost.)

Rat offering (You may cast this spell any time you could cast an instant by sacrificing a Rat and paying the difference in mana costs between this and the sacrificed Rat. Mana cost includes color.)
Whenever a permanent is put into an opponent's graveyard, that player loses 1 life.