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."
FlashBear Witness — Whenever another creature dies, if it was attacking or blocking alone, exile it and investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")
Replicate—Tap an untapped Dalek you control. (When you cast this spell, copy it for each time you paid its replicate cost. You may choose new targets for the copies.)Destroy target creature. Its controller loses 3 life.
Enchant noncommander creatureYou 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.
Skulk (This creature can't be blocked by creatures with greater power.)Whenever Cybermat attacks and isn't blocked, it gets +X/+0 until end of turn, where X is the number of attacking artifact creatures.
Make Them Pay — Whenever a nontoken artifact creature you control dies, you may exile it. If you do, choose an opponent with the most life among your opponents. That player faces a villainous choice — They lose 4 life, or you create a token that's a copy of that card.
Vanishing 12 (This enchantment enters with twelve time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)Whenever one or more time counters are removed from Regenerations Restored, scry 1 and you gain 1 life. Then if Regenerations Restored has no time counters on it, exile it. When you...
(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)I — Create a 1/1 white Human creature token with ward and a 4/4 white Alien Rhino creature token.II — Investigate.III — You may exile a Human you control and an artifact you control. If you do, search your library for a Doctor card, put it onto the battlefield, then...
Affinity for Daleks (This spell costs less to cast for each Dalek you control.)Other Daleks you control have haste.At the beginning of combat on your turn, each opponent faces a villainous choice — That player sacrifices a creature of their choice, or you create a 3/3 black Dalek artifact creature token with menace.