Flying, haste
Whenever Klauth attacks, add X mana in any combination of colors, where X is the total power of attacking creatures. Spend this mana only to cast spells. Until end of turn, you don't lose this mana as steps and phases end.
Ware the darkening sky and the great red wing; he does not suffer competition.
Flying, ward
Whenever another nontoken Dragon you control enters, create a token that's a copy of it, except the token isn't legendary.
The most terrifying thing a dragon can be is well-read.
Flying
At the beginning of your end step, create a Blood token for each player who lost life this turn.
Whenever Strefan attacks, you may sacrifice two Blood tokens. If you do, you may put a Vampire card from your hand onto the battlefield tapped and attacking. It gains indestructible until end of turn.
Flying
If an opponent would lose life during your turn, they lose twice that much life instead. (Damage causes loss of life.)
"Yes, run! He likes to see me play with my food."
End the Festivities deals 1 damage to each opponent and each creature and planeswalker they control.
"And a final toast, to my brother—and his enduring health."
: Add .
, Pay 1 life: Add one mana of any color. Spend this mana only to cast a Vampire spell.
, : Create a Blood token. This ability costs less to activate for each Vampire you control. (It's an artifact with ", , Discard a card, Sacrifice this token: Draw a card.")
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.)
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.
, Discard a creature card: Return target creature card from your graveyard to your hand.
Whenever one or more creature cards are put into your graveyard from anywhere, venture into the dungeon. This ability triggers only once each turn. (To venture into the dungeon, enter the first room or advance to the next room.)
Create Undead — Whenever you complete a dungeon, return target creature card from your graveyard to the battlefield.
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Changeling (This card is every creature type.)
: Until end of turn, creatures you control have base power and toughness X/X and gain all creature types.
Not who you are, but who you could be.
, : Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.
How much of a nerd do you have to be to get your own archivist?
Flying
Whenever this creature deals combat damage to a creature, destroy that creature.
Dredge 5 (If you would draw a card, you may mill five cards instead. If you do, return this card from your graveyard to your hand.)
Its presence lingers long after it's gone. Unfortunately.
: You choose target creature an opponent controls, and that opponent chooses target creature. Flip a coin. If you win the flip, destroy the creature you chose. If you lose the flip, destroy the creature your opponent chose.
The coin flip is for him to chose the weapon. He's already chosen the victim.
Sacrifice this creature: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.
Sometimes it seems the elders grow younger every year.
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This land enters tapped.
Cycling (, Discard this card: Draw a card.)
Once there was a beautiful parking lot here.
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This land enters tapped.
Cycling (, Discard this card: Draw a card.)
Jump in. The water is warm.
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This land enters tapped.
Cycling (, Discard this card: Draw a card.)
It's dangerous down here at the bottom.
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This land enters tapped.
Cycling (, Discard this card: Draw a card.)
Light is important for growth. This area with the moldering undead needs more light.
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This land enters tapped.
Cycling (, Discard this card: Draw a card.)
Everyone deserves to eat, and eat well.
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: Add or . This artifact deals 1 damage to you.
Admit one. Then admit nothing.
Search your library for a card, put that card into your hand, then shuffle.
Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, add .
The show must go on! Though some of the audience and several performers might not.
Equipped creature has haste and shroud. (It can't be the target of spells or abilities.)
Equip
Nice tight laces like these will keep you on your toes.
Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.)
Search your library for a card, exile it face down, then shuffle. If this spell was bargained, you may cast the exiled card without paying its mana cost if that spell's mana value is 4 or less. Put the exiled card into your hand if it wasn't cast this way.
Spectacle (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.)
Exile the top two cards of your library. Until the end of your next turn, you may play those cards.
"Next—we need a volunteer from the audience! Who thinks they can stand very, very still?"
Destroy target permanent. Its controller creates a 3/3 green Elephant creature token.
"Oh... Well you're not so scary now, are you?"
—Fluttershy
Whenever a creature you control deals combat damage to a player, you may draw a card.
Cycling (, Discard this card: Draw a card.)
"Secrets are so much tastier when they're not meant for you."
—Discord
Choose target instant or sorcery spell that targets only a single permanent or player. Copy that spell for each other permanent or player the spell could target. Each copy targets a different one of those permanents and players.
"See? I'd never leave my friends hangin'!"
—Rainbow Dash
At the beginning of your upkeep, if an opponent controls three or more creatures, sacrifice this enchantment, search your library for up to two creature cards, put those cards onto the battlefield, then shuffle.
"Do you know you're all my very best friends?"
—Twilight Sparkle
: Add one mana of any color in your commander's color identity.
"The Tree of Harmony's magic maintained balance throughout Equestria, protecting us from chaos and darkness."
—Princess Luna
: Add .
"It's time for you to fulfill your destiny."
—Princess Celestia
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Exile target creature you control, then return that card to the battlefield under your control.
Bilbo saw that the world was falling away. He shut his eyes again and held on tighter.
Whenever one or more creatures you control with mana value 3 or less enter, draw a card. This ability triggers only once each turn.
"I suppose you will all stay to supper?" Bilbo said in his most politest unpressing tones.
Activated abilities of artifacts can't be activated.
As sunlight crested the hill, the trolls' ongoing argument was doomed to go forever unresolved.
Change the target of target spell with a single target. You lose life equal to that spell's mana value.
"Bless us and splash us, my precioussss! I guess it's a choice feast; at least a tasty morsel it'd make us, gollum!"
As an additional cost to cast this spell, discard a card.
Draw two cards and create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")
Their friends could not help them, for the assault from the Mountain was renewed with redoubled force.
: Add one mana of any color that a land an opponent controls could produce.
Equipped creature has haste and shroud. (It can't be the target of spells or abilities.)
Equip
: Add .
: Target nonland permanent becomes an artifact in addition to its other types until end of turn.
: Add .
You have no maximum hand size.
: Add .
Target creature gets -1/-1 until end of turn for each Swamp you control.
As an additional cost to cast this spell, sacrifice a creature.
Search your library for a card, put that card into your hand, then shuffle.
Return target creature card from your graveyard to the battlefield.
Flashback—Sacrifice three creatures. (You may cast this card from your graveyard for its flashback cost. Then exile it.)
Flying
Whenever you create or sacrifice a token, each opponent loses 1 life.
Scry 2, then draw two cards. You lose 2 life. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)
You may cast target instant or sorcery card from an opponent's graveyard without paying its mana cost. If that spell would be put into their graveyard, exile it instead.
Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)
Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Draw a card.
Enchant creature
Whenever enchanted creature deals damage to an opponent, you may draw a card.
Search your library for an instant or sorcery card, reveal it, put it into your hand, then shuffle.