First strike
When this creature enters, if an opponent controls more lands than you, you may search your library for a Plains card, put it onto the battlefield, then shuffle.

Take an extra turn after this one. At the beginning of that turn's end step, you lose the game.

As an additional cost to cast this spell, sacrifice an artifact or creature.
Draw two cards and create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")

Destroy target artifact.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Untap all nonland permanents you control.

When this creature enters, draw a card.

Flying (This creature can't be blocked except by creatures with flying or reach.)

Flying, deathtouch
When this creature enters, draw a card.

Whenever a Sliver creature you control becomes the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays .

Players skip their untap steps.
At the beginning of your upkeep, sacrifice this enchantment unless you pay .

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

As an additional cost to cast this spell, discard a card.
Draw two cards.

Whenever a creature you control deals combat damage to a player, choose one —
• Goad target creature that player controls.
• Exile the top card of that player's library. Until end of turn, you may cast that card and you may spend mana as though it were mana of any color to cast that spell.

Protection from blue (This creature can't be blocked, targeted, dealt damage, or enchanted by anything blue.)
Whenever this creature attacks, it gets +2/+0 until end of turn for each other attacking Goblin.

Deathtouch
Whenever one or more creature cards leave your graveyard, each opponent loses 1 life and you gain 1 life.

Search your library for a Forest card, put that card onto the battlefield, then shuffle.

: Add .
: Add or . This artifact deals 1 damage to you.

This spell can't be countered.
Destroy target nonland permanent with mana value 3 or less.

If you would flip a coin, instead flip two coins and ignore one.

Sliver creatures you control have ": Add one mana of any color."

Whenever an Aura you control enters, if you cast it, you may search your library for an Aura card with mana value less than or equal to that Aura and with a different name than each Aura you control, put that card onto the battlefield attached to Light-Paws, then shuffle.

Return up to X target artifact and/or non-Aura enchantment cards each with mana value X or less from your graveyard to the battlefield. If X is 6 or more, those permanents are 4/4 creatures in addition to their other types.

Proliferate, then choose any number of permanents you control that had a counter put on them this way. Those permanents phase out. (To proliferate, choose any number of permanents and/or players, then give each another counter of each kind already there. Treat phased-out permanents and anything attached to them as though they don't exist until their controller's next turn.)

At the beginning of each player's draw step, that player draws an additional card.

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

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

You may have this creature enter as a copy of any creature on the battlefield, except it's an Illusion in addition to its other types and it has "When this creature becomes the target of a spell or ability, sacrifice it."

Flash
Whenever an opponent searches their library, you gain 1 life and draw a card.

Lands you control are every basic land type in addition to their other types.

Search your library for a blue instant card, reveal that card, put it into your hand, then shuffle.

Activated abilities of artifacts can't be activated.

All Slivers have shroud. (They can't be the targets of spells or abilities.)

Add .
Splice onto Arcane (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

, : Add .

Artifact spells you cast cost less to cast.

All Sliver creatures get +1/+1.