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

Whenever a creature you control dies, each opponent loses 1 life and you gain 1 life.
, , Sacrifice a creature: Return target creature card from your graveyard to the battlefield. Activate only as a sorcery.

: Choose a color of a permanent you control. Add one mana of that color.

: Choose a color of a permanent you control. Add one mana of that color.

, Sacrifice a creature: Put two +1/+1 counters on target creature.
, Remove a counter from a creature you control: Create a Treasure token.
, Sacrifice an artifact: Create a 2/1 white and black Inkling creature token with flying.
: Untap Fain.

This creature can't block.
This creature has haste as long as an opponent has 10 or less life.
Landfall — Whenever a land you control enters, you may return this card from your graveyard to the battlefield.

Choose up to five worth of modes. You may choose the same mode more than once.
— Create a 1/1 white Rabbit creature token.
— Exile target nonland permanent. Its controller draws a card.
— Return target permanent card with mana value 3 or less from your graveyard to the battlefield with an indestructible counter on it.

Flying
Whenever a source you control deals noncombat damage to an opponent, you may exile that many cards from the top of your library. You may play those cards this turn.

This creature enters with three +1/+1 counters on it.
At the beginning of your upkeep, you may flip a coin. If you win the flip, put a +1/+1 counter on this creature. If you lose the flip, remove a +1/+1 counter from this creature.

Whenever an opponent discards a card, this enchantment deals 2 damage to that player.

Enchant creature
Enchanted creature's activated abilities can't be activated.
: Attach this Aura to target creature.

(: Add .)

Whenever a Sliver you control attacks, defending player loses 1 life.

Grand Summon — : Add one mana of any color. When you next cast a creature spell this turn, that creature enters with two additional +1/+1 counters on it.
Whenever another permanent you control is put into a graveyard from the battlefield, if it had one or more counters on it, you may put that number of +1/+1 counters on target creature.

: Add one mana of any color.
, : Up to X target creatures you control each gain haste until end of turn and can't be blocked this turn except by creatures with haste, where X is the number of Bobbleheads you control as you activate this ability.

Lifelink
Praesidium Protectiva — When this creature is put into your graveyard from the battlefield, exile it and the top six cards of your library in a face-down pile. If you do, shuffle that pile and put it back on top of your library.
Miracle (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)

This artifact enters tapped.
As this artifact enters, choose a color.
: Add one mana of the chosen color.

Destroy six target creatures.

Other Elf creatures you control get +1/+1.
: Add for each Elf you control.

: Flip a coin. If you win the flip, draw a card. If you lose the flip, counter target artifact spell you control that isn't the target of an ability from another creature named Goblin Artisans.