Whenever this creature attacks, you may mill three cards.
When this creature dies, return all land cards from your graveyard to the battlefield tapped.

When this creature enters, you take the initiative.
Whenever you attack, target attacking Cleric, Rogue, Warrior, or Wizard gains protection from creatures until end of turn. It explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on the creature, then put the card back or put it into your graveyard.)

First strike
At the beginning of your upkeep, if your opponents control no creatures, this creature deals 4 damage to you.

Flash
Flying
When this creature enters, you may exile target non-Angel creature you control, then return that card to the battlefield under your control.

Other Zombies you control get +1/+1.
, , Sacrifice a creature: Return a Zombie creature card at random from your graveyard to the battlefield. Activate only during your turn and only if there are at least three Zombie creature cards in your graveyard.

As this artifact enters, choose a creature type.
Whenever you cast a spell of the chosen type, put a charge counter on this artifact.
Creatures you control of the chosen type get +1/+1 for each charge counter on this artifact.

Your maximum hand size is eleven.
Whenever Cecily, Haunted Mage attacks, you draw a card and you lose 1 life. Then if you have eleven or more cards in your hand, you may cast an instant or sorcery spell from your hand without paying its mana cost.
Partner—Friends forever (You can have two commanders if both have this ability.)

Dethrone (Whenever this creature attacks the player with the most life or tied for most life, put a +1/+1 counter on it.)
Other creatures you control have dethrone.
Whenever a creature you control with a +1/+1 counter on it dies, return that card to the battlefield under your control at the beginning of the next end step.

Flying
: Create a 2/2 black Vampire creature token with flying.
: Transform this creature. Activate only if you control five or more Vampires.

( represents colorless mana.)
When this creature enters, target opponent reveals their hand. You choose a nonland card from it and exile that card.
When this creature leaves the battlefield, target opponent draws a card.

Ward
Whenever you cast a Doctor spell or creature spell with doctor's companion, draw a card.
Doctor's companion (You can have two commanders if the other is the Doctor.)

Flash
Flying
Champion a Faerie (When this enters, sacrifice it unless you exile another Faerie you control. When this leaves the battlefield, that card returns to the battlefield.)
When a Faerie is championed with this creature, tap all lands target player controls.

: This creature gets +1/+1 until end of turn. Target opponent creates a 1/1 green Hippo creature token.
: This creature gains protection from black and from red until end of turn. Target opponent gains 2 life.
: This creature gains flying until end of turn. Target opponent may draw a card.

Chain Reaction deals X damage to each creature, where X is the number of creatures on the battlefield.

Creatures you control are every creature type. The same is true for creature spells you control and creature cards you own that aren't on the battlefield.
, : Create a 2/2 blue Shapeshifter creature token with changeling. (It is every creature type.)

Creature spells you cast with power 4 or greater cost less to cast.
Whenever Goreclaw attacks, each creature you control with power 4 or greater gets +1/+1 and gains trample until end of turn.

Partner with Pir, Imaginative Rascal (When this creature enters, target player may put Pir into their hand from their library, then shuffle.)
Whenever you draw a card, put a +1/+1 counter on Toothy.
When Toothy leaves the battlefield, draw a card for each +1/+1 counter on it.

As an additional cost to cast this spell, discard a card.
Draw two cards and create two Treasure tokens. (They're artifacts with ", Sacrifice this token: Add one mana of any color.")

If a red source you control would deal damage to an opponent or a permanent an opponent controls, it deals that much damage plus 2 instead.

: Create X 1/1 red Goblin creature tokens, where X is the number of Goblins you control.

Threshold — This creature gets +7/+7 as long as there are seven or more cards in your graveyard.

, : Destroy target black permanent.

You may have this creature enter as a copy of any creature on the battlefield.

Menace
Whenever Sophina, Spearsage Deserter attacks, investigate once for each nontoken attacking creature. (To investigate, create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")
Partner—Friends forever (You can have two commanders if both have this ability.)

If a creature dying causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.
Creature tokens you control have vigilance and lifelink.

Ward
As this creature enters, choose a creature type.
This creature is the chosen type in addition to its other types.
If a triggered ability of another creature you control of the chosen type triggers, it triggers an additional time.

Whenever you gain life, you may pay , where X is less than or equal to the amount of life you gained. If you do, draw X cards.

Whenever a source an opponent controls deals damage to you, that player sacrifices a permanent of their choice.

All Slivers have ": Target Sliver creature gets +X/+0 until end of turn, where X is the number of Slivers on the battlefield."

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, you may draw a card.

Avoidance — Whenever you cast a noncreature spell, exile up to one target nonland permanent you control, then return that card to the battlefield under its owner's control.

Whenever The Fifteenth Doctor enters or attacks, mill three cards. You may put an artifact card with mana value 2 or 3 from among them into your hand.
The first nonartifact spell you cast each turn has improvise. (Your artifacts can help cast that spell. Each artifact you tap after you're done activating mana abilities pays for .)

Whenever one or more creatures you control deal combat damage to a player, tap all lands that player controls and untap all lands you control.

Destroy all creatures. They can't be regenerated.

As long as this creature is on the battlefield, it has all activated abilities of all creature cards in all graveyards.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)
Destroy target creature or planeswalker. Each creature that convoked this spell connives. (Draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on that creature.)