Sliver creatures you control have double strike. (They deal both first-strike and regular combat damage.)

Landfall — Whenever a land you control enters, create a 2/2 green Elemental creature token.

Flying
: This creature's owner shuffles it into their library. If that player does, they reveal cards from the top of that library until a card named Mirror-Mad Phantasm is revealed. The player puts that card onto the battlefield and all other cards revealed this way into their graveyard.

As an additional cost to cast this spell, sacrifice a creature.
Fling deals damage equal to the sacrificed creature's power to any target.

Each other creature you control enters with a number of additional +1/+1 counters on it equal to this creature's power and as a Mutant in addition to its other types.

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.)
Equip

Flying, ward
Whenever you attack, target attacking creature connives X, where X is the number of attacking creatures. (Draw X cards, then discard X cards. Put a +1/+1 counter on that creature for each nonland card discarded this way.)

Malignus's power and toughness are each equal to half the highest life total among your opponents, rounded up.
Damage that would be dealt by this creature can't be prevented.

This creature gets +2/+0 for each Mountain you control.
Whenever you attack with creatures with total power 12 or greater for the first time each turn, untap all attacking creatures. After this phase, there is an additional combat phase.

Replicate (When you cast this spell, copy it for each time you paid its replicate cost. You may choose new targets for the copies.)
Counter target triggered ability or colorless spell.

At the beginning of your upkeep, you may put a harmony counter on Instrument of the Bards.
, : Search your library for a creature card with mana value equal to the number of harmony counters on Instrument of the Bards, reveal it, and put it into your hand. If that card is legendary, create a Treasure token. Then shuffle.

When this creature enters, choose one —
• Tax — Until your next turn, spells your opponents cast cost more to cast.
• Arrest — Detain target creature an opponent controls. (Until your next turn, that creature can't attack or block and its activated abilities can't be activated.)

Whenever another Elf you control enters, put a +1/+1 counter on Marwyn.
: Add an amount of equal to Marwyn's power.

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

Landfall — Whenever a land you control enters, you gain 1 life and draw a card.

When this creature enters, create X 1/1 white Halfling creature tokens and X Food tokens. (They're artifacts with ", , Sacrifice this token: You gain 3 life.")

Draw a card.
Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

As an additional cost to cast this spell, you may waterbend . (While paying a waterbend cost, you can tap your artifacts and creatures to help. Each one pays for .)
Draw two cards. If this spell's additional cost was paid, instead shuffle your graveyard into your library, draw seven cards, and you have no maximum hand size for the rest of the game.
Exile Spirit Water Revival.

: Return target land you control to its owner's hand.
, Discard a land card: Draw a card.

As this artifact enters, choose a creature type.
Creature spells you cast of the chosen type cost less to cast.
At the beginning of your upkeep, look at the top card of your library. If it's a creature card of the chosen type, you may reveal it and put it into your hand.