mtg.wtf

The first historic spell you cast each turn has convoke.
Doctor's companion

Vigilance
{1}, {T}: Create a tapped token that's a copy of target token that entered this turn.
Doctor's companion

Brave Heart — Whenever you attack, target attacking historic creature gets +1/+1 and gains indestructible until end of turn.
Doctor's companion

I, II, III — Exile target nontoken creature an opponent controls until this Saga leaves the battlefield.
IV — Starting with you, each player votes for innocent or guilty. If guilty gets more votes, the owner of each card exiled with this Saga puts that card on the bottom of their library.

I — Each player creates three tapped 1/1 white Warrior creature tokens. The tokens are goaded for as long as this Saga remains on the battlefield.
II, III — Put a +1/+1 counter on each Warrior creature.
IV — You may exile a nontoken creature you control. When you do, exile all Warriors.

Draw two cards, then you may exile a nonland card from your hand with a number of time counters on it equal to its mana value. Then target opponent does the same. Cards exiled this way that don't have suspend gain suspend.
Time travel.

Look to the Stars — At the beginning of your upkeep, put a time counter on Wilfred Mott. Then look at the top X cards of your library, where X is the number of time counters on Wilfred Mott. You may put a nonland permanent card with mana value 3 or less from among them onto the battlefield. Put the rest on the bottom of your library in a random order.

{2}{U}, {T}: Copy target activated or triggered ability you control. You may choose new targets for the copy.
Ultimate Sacrifice — {1}{U}, Sacrifice Adric: Counter target activated or triggered ability.
Doctor's companion

Time travel.
Storm

I, II, III — Reveal cards from the top of your library until you reveal a Doctor card, a card with doctor's companion, or a Vehicle card. Put that card into your hand and the rest on the bottom of your library in a random order.

You may have this creature enter as a copy of any creature on the battlefield, except it isn't legendary, is an artifact in addition to its other types, and has myriad.

Enchant noncommander creature
You control enchanted creature.
Enchanted creature gets +2/+2 and can't be blocked unless it's attacking its owner or a permanent its owner controls.

Turn target creature face down. It's a 2/2 Cyberman artifact creature.

Mentor
Creatures you control have "Whenever one or more counters are put on this creature for the first time each turn, draw a card."

Until end of turn, if one or more creatures would enter from exile or after being cast from exile, their owners shuffle them into their libraries instead.
Cycling {2}

I — Search your library for a Doctor card, reveal it, put it into your hand, then shuffle.
II — Create a Food token and a 1/1 white Human creature token with "Doctor spells you cast cost {1} less to cast."
III — Create a token that's a copy of target creature, except it's a legendary Alien named Prisoner Zero.

Five Hundred Year Diary enters tapped.
{T}: Add {U} for each Clue you control.
{2}, Sacrifice Five Hundred Year Diary: Draw a card.

Creatures your opponents control have base power and toughness 0/1 until end of turn.

You may have this creature enter as a copy of any creature on the battlefield, except it has vanishing 3 if that creature doesn't have vanishing.

Islandwalk
Water Always Wins — Whenever this creature attacks, put a flood counter on another target creature or land. If it's a creature, it becomes a copy of this creature. If it's a land, it becomes an Island in addition to its other types.

Choose up to four target creatures you don't control. For each of them, that creature's controller faces a villainous choice — That creature becomes a 1/1 white Human creature and loses all abilities, or you create a token that's a copy of it.

Negative — As long as K-9 is untapped, other legendary creatures you control have ward {1}.
Affirmative — {1}{U}, {T}: Target legendary creature can't be blocked this turn.
Doctor's companion

Woman Who Walked the Earth — When Martha Jones enters, investigate.
Whenever you sacrifice a Clue, Martha Jones and up to one other target creature can't be blocked this turn.
Doctor's companion

Choose target creature you control. Each other creature becomes a copy of that creature until end of turn, except it isn't legendary.

{T}: Add {U} for each counter on Nardole. Spend this mana only to cast noncreature spells.
Undying
Doctor's companion