All creatures gain hexproof and indestructible until end of turn. Players gain hexproof until end of turn. Players can't lose life this turn and players can't lose the game or win the game this turn.
"Everybody lives, Rose. Just this once, everybody lives!" —The Ninth Doctor
I — Create a 1/1 white Human Noble creature token with vanishing 3 and "Prevent all damage that would be dealt to this creature." II — Create a 2/2 white Horse creature token with "Doctors you control have horsemanship." III — Whenever a creature you control deals combat damage to a player this turn, time travel.
I — Destroy all creatures. II — Return target legendary creature card from your graveyard to the battlefield. Put your choice of a first strike, vigilance, or lifelink counter on it.
You may choose not to untap The Pandorica during your untap step. {1}{W}, {T}: Untap another target nonland permanent, then it phases out. It can't phase in for as long as The Pandorica remains tapped. When The Pandorica becomes untapped or leaves the battlefield, that permanent phases in. Activate only as a sorcery.
I, II, III — Exile target nontoken creature an opponent controls until Trial of a Time Lord 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 Trial of a Time Lord 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 The War Games 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
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 Auton Soldier 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.
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.