mtg.wtf

Players play a Magic subgame, starting at 1 life and using their libraries as their decks. For the rest of the main game, if a source would deal damage to a player who didn't win the subgame, it deals double that damage to that player instead.

Spells you cast that would counter a spell cost {U}{U} less to cast.
Whenever a spell an opponent controls is countered by a spell or ability you control, draw a card. The Countering Runner deals 2 psychic damage to that player. (Psychic damage doesn't cause loss of life, but a player who's been dealt 20 psychic damage loses the game.)
Ready to run (You can have two commanders if both have ready to run.)

If The Covert Blue Mage is your commander, your starting deck can contain any number of cards beyond the maximum deck size. (For example, your deck can be 120 cards.)
When The Covert Blue Mage enters, create a colorless Equipment artifact token named Covert Sunglasses. It has "Equipped creature can't be blocked" and equip {2}{W/U}.

Whenever The Crab Queen attacks, create a token that's a copy of one of the following at random: Skitter Eel; Skittering Crustacean; Ruin Crab; Charix, the Raging Isle; Scuttletide; or Heartstone.

Affinity for artifacts
When The Crafter enters the battlefield, create two colorless scrap artifact tokens. (They have no abilities.)
{T}, Sacrifice an artifact: Create an equipment token named Bling with "Equipped creature gets +1/+0" and "Equip {1}."

Flash
When The Crimson Avenger enters the battlefield, choose target spell an opponent controls. Reveal cards from the top of your library until you reveal a card that shares a mana value with it. Cast that card without paying its mana cost. Then shuffle your library.

I — For each player, destroy up to one target creature that player controls. For each creature destroyed this way, its controller creates a 3/3 green Mutant creature token with deathtouch.
II — Target nontoken creature becomes a 6/6 legendary Horror creature named Fenric and loses all abilities.
III — Target Mutant fights another target creature named Fenric.

Creatures you control get +X/+0, where X is the greatest number of consecutive nonland, nontoken permanents in a mana curve you control. (For example, if you have permanents with mana value 3, 4, and 5, creatures you control get+3/+0. If you're missing 4, they only get +1/+0.)

When The Cyber-Controller enters, each opponent mills X cards. Put all creature cards milled this way onto the battlefield face down under your control. They're 2/2 Cyberman artifact creatures.
Other artifact creatures you control get +1/+1.

Whenever a nonblack card is put into a player's graveyard from anywhere, that player loses 1 life.
Whenever chaos ensues, each opponent discards a card.

I, II, III — Exile cards from the top of your library until you exile a legendary card. You may play that card for as long as The Day of the Doctor remains on the battlefield. Put the rest of those exiled cards on the bottom of your library in a random order.
IV — Choose up to three Doctors. You may exile all other creatures. If you do, The Day of the Doctor deals 13 damage to you.

When you set this scheme in motion, for each opponent, put up to one target creature card from that player's graveyard onto the battlefield under your control. Each of those creatures attacks its owner each combat if able.

Spells you control that target a creature you control cost {2} less to cast.

Horsemanship (This creature can't be blocked except by creatures with horsemanship.)
Commanders you control have horsemanship.
Partner (You can have two commanders if both have partner.)

When you planeswalk to The Dining Car, each player creates a Food token.
Sixty-Six Seconds — At the beginning of your upkeep, sacrifice a creature with the least toughness among creatures you control. Then investigate.
Whenever chaos ensues, activated abilities of artifact tokens you control cost {2} less to activate this turn.

Whenever the Disciple of Nissa attacks, you may pay {X}{X}{X}{G}{G}. When you do, create X tokens that are copies of different Nissa planeswalkers chosen at random. They each enter with an additional loyalty counter. (There are currently eleven. Yes, Nissa, Sage Animist counts. Perhaps look up the list and roll a D20?)

Whenever The Disciple of Vess attacks, you may put a planeswalker card from your hand onto the battlefield. If you don't, create a token that's a copy of a Liliana planeswalker chosen at random.
(There are currently thirteen. Perhaps look up the list and roll a D20?)

Creatures enter tapped.
Whenever chaos ensues, for each opponent, choose up to one target nonland permanent that opponent controls. Untap those permanents. They phase out. They can't phase in for as long as The Doctor's Childhood Barn remains face up. When a player planeswalks, those permanents phase in.

If a creature would die, instead exile it and that creature's controller loses 2 life.
Whenever chaos ensues, redistribute any number of players' life totals.

Flying
Whenever The Dogronmaster or another Dragon or Dog enters the battlefield under your control, create a token that's a copy of the card Armadillo Cloak and attach it to that creature.

Whenever you roll the planar die, creatures you control get +1/+1 and gain haste until end of turn.
Whenever chaos ensues, end the turn.

When The Duke of Midrange enters the battlefield, choose one of Thoughtseize, Lightning Bolt, or Abrupt Decay. Cast a copy of the chosen card.
The Duke of Midrange's power is equal to the number of card types among cards in all graveyards and its toughness is equal to that number plus 1.

Grumpy Co-play — When The Egotistical Velociraptor enters the battlefield, if you cast it, you may choose another Magic player not currently in a game of Magic and ask them to take over your game until the end of your next turn. If they agree, shuffle your hand into your library, draw four cards and gain 4 life. (You can't give them advice, but witty banter is encouraged.)

When The Eighth Doctor enters, mill three cards.
Once during each of your turns, you may play a historic land or cast a historic permanent spell from your graveyard. If you do, it gains "If this permanent would leave the battlefield, exile it instead of putting it anywhere else."

I. AM. TALKING! — Whenever The Eleventh Doctor deals combat damage to a player, you may exile a card from your hand with a number of time counters on it equal to its mana value. If it doesn't have suspend, it gains suspend.
{2}: Target creature with power 3 or less can't be blocked this turn.