: Add .
, , Sacrifice this artifact: Draw a card.

Winter Soldier enters tapped.

Trample
Madness (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Whenever The Seventh Doctor attacks, choose a card in your hand. Defending player guesses whether that card's mana value is greater than the number of artifacts you control. If they guessed wrong, you may cast it without paying its mana cost. If you don't cast a spell this way, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this token: Draw a card.")

This spell costs less to cast for each card you've drawn this turn.
Inspired Fire deals 4 damage to target creature.

Reveal the top X plus one cards of your library. Choose a creature card and/or a land card from among them. Put those cards into your hand and the rest on the bottom of your library in a random order. If X is 5 or more, instead put the chosen cards onto the battlefield or into your hand and the rest on the bottom of your library in a random order.

Destroy target creature or planeswalker that's green or white. You gain 1 life.

: Regenerate this creature.

Target player investigates. Target creature gets +1/+0 and gains flying until end of turn. Untap it. (To investigate, create a Clue token. It's an artifact with ", Sacrifice this token: Draw a card.")

Clash with an opponent, then return target creature to its owner's hand. If you win, you may put that creature on top of its owner's library instead. (Each clashing player reveals the top card of their library, then puts that card on their choice of the top or bottom. A player wins if their card had a greater mana value.)

: Add one mana of any color. Spend this mana only to cast a creature spell.

: Add one mana of any color in your commander's color identity.

Target opponent sacrifices a creature of their choice.

When this creature enters, return target creature to its owner's hand.

(: Add .)

Flying
Whenever one or more other creatures die, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Enchant land
Enchanted land has ", : Create a Tarmogoyf token." (It's a Lhurgoyf creature with "Tarmogoyf'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.")

When this creature enters, return target instant or sorcery card from your graveyard to your hand.

When this creature enters, create a Lander token. (It's an artifact with ", , Sacrifice this token: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.")
Whenever you sacrifice an artifact, this creature deals 2 damage to target opponent.

Whenever this creature blocks or becomes blocked by a creature, destroy that creature. You gain life equal to that creature's toughness.