Whenever another Rat enters the battlefield under your control, exile up to one target card from an opponent's graveyard. At the beginning of combat on your turn, create a 1/1 black Rat creature token with "This creature can't block."

Nezumi Bladeblesser has deathtouch as long as you control an artifact. Nezumi Bladeblesser has menace as long as you control an enchantment. (It can't be blocked except by two or more creatures.)

Nezumi Bladeblesser has deathtouch as long as you control an artifact. Nezumi Bladeblesser has menace as long as you control an enchantment. (It can't be blocked except by two or more creatures.)

When Burglar Rat enters the battlefield, each opponent discards a card.

When Drainpipe Vermin dies, you may pay {B}. If you do, target player discards a card.

When Drainpipe Vermin dies, you may pay {B}. If you do, target player discards a card.

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

When Nezumi Informant enters the battlefield, each opponent discards a card.

Ninjutsu {3}{B} ({3}{B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.) Whenever Okiba-Gang Shinobi deals combat damage to a player, that player discards two cards.

When Ravenous Rats enters the battlefield, target opponent discards a card.

When Ravenous Rats enters the battlefield, target opponent discards a card.

Corrupted — Sacrifice an artifact or creature: Draw a card. Activate only if an opponent has three or more poison counters and only once each turn.

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.) Other Rats you control have toxic 1. When Karumonix enters the battlefield, look at the top five cards of your library. You may reveal any number of Rat cards from among them and put the revealed cards into your hand. Put the rest on the bottom of your library in a random order.

Whenever you activate a ninjutsu ability, look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order. This ability triggers only once each turn. Each creature card in your hand has ninjutsu {2}{U}{B}.

As long as Futurist Operative is tapped, it's a Human Citizen with base power and toughness 1/1 and can't be blocked. {2}{U}: Untap Futurist Operative.

({T}: Add {U}.)

Ninjutsu {1}{B} ({1}{B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.) Lifelink

Return target permanent to its owner's hand.

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

Flying When Gravelighter enters the battlefield, draw a card if a creature died this turn. Otherwise, each player sacrifices a creature.

Ninjutsu {U} ({U}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.) Whenever Mistblade Shinobi deals combat damage to a player, you may return target creature that player controls to its owner's hand.

Copy target instant or sorcery spell, then return it to its owner's hand. You may choose new targets for the copy.

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