Ask target opponent if they remembered to get you a present. If they say yes, they put a card they own from outside the game into your hand. Otherwise, you gain control of target permanent they control.

Target player activates a mana ability of each land they control. Then that player loses all unspent mana and you add the mana lost this way.

You have no maximum hand size.
: Add .

When Sauron enters, gain control of target creature an opponent controls until end of turn. Untap it. It gains haste until end of turn.
: Creatures you control get +2/+0 until end of turn. Each opponent loses 2 life.

Mines of Moria enters tapped unless you control a legendary creature.
: Add .
, , Exile three cards from your graveyard: Create two Treasure tokens.

: Add .
: Add or . This land deals 1 damage to you.

, : Create a Food token. (It's an artifact with ", , Sacrifice this token: You gain 3 life.")
Whenever you sacrifice a Food, create a tapped Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")

Indestructible
As long as your devotion to red is less than five, Purphoros isn't a creature.
Whenever another creature you control enters, Purphoros deals 2 damage to each opponent.
: Creatures you control get +1/+0 until end of turn.

, Pay 1 life, Sacrifice this land: Search your library for a Plains or Swamp card, put it onto the battlefield, then shuffle.

You may look at the top card of your library any time.
You may cast artifact spells and colorless spells from the top of your library.
, Pay 1 life: Exile the top card of your library.

Sima Yi's power is equal to the number of Swamps you control.

: Search your library for a card, put that card into your hand, then shuffle.

Trample

Target player takes an extra turn after this one. Shuffle Beacon of Tomorrows into its owner's library.

Flying
Flying backup (When this creature enters the battlefield, put a flying counter on target creature. If that's another creature, it also gains the following ability until end of turn.)
Whenever this creature deals combat damage to a player, planeswalker, or battle, surveil 1.

When X enters, you may put it into target opponent's hand. If you do, as long as it remains in their hand, that player can't cast X and they play with their hand revealed.
During your turn while X is in an opponent's hand, you may activate abilities of nonland permanents opponents control. If you activate the crew or saddle ability of a permanent this way, gain control of it until end of turn. Untap it. It gains haste until end of turn.

, : You may put a creature card from your hand onto the battlefield.

You gain 3 life for each creature attacking you.

Target creature gets +7/+7 until end of turn.

Indestructible
Darksteel Juggernaut's power and toughness are each equal to the number of artifacts you control.
This creature attacks each combat if able.