You may play a card you own from outside the game this turn.

Equipped creature gets +2/+2 and has protection from white and from blue.
Whenever equipped creature deals combat damage to a player, put a +1/+1 counter on a creature you control, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Equip

, : Add for each Swamp you control.

(: Add .)

As an additional cost to cast this spell, sacrifice an artifact.
Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle.

Destroy target nonblack creature. You gain 3 life.

Return target nonland permanent you don't control to its owner's hand.
Overload (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

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

If an effect would create one or more tokens under your control, it creates twice that many of those tokens instead.

Enchant creature
When this Aura enters, untap up to five lands.
You control enchanted creature.

Whenever another creature you control dies, create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")

: Add .
, : Add , , or .

Flying
Whenever Korvold enters or attacks, sacrifice another permanent.
Whenever you sacrifice a permanent, put a +1/+1 counter on Korvold and draw a card.

(: Add , , or .)
This land enters tapped.
Cycling (, Discard this card: Draw a card.)

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

All creatures have haste.

Equipped creature gets +3/+2.
Whenever equipped creature deals combat damage to a player, draw a card, then you may cast a spell from your hand with mana value less than or equal to that damage without paying its mana cost.
Equip

Equipped creature gets +1/+1 and has trample and lifelink.
: Permanents your opponents control lose hexproof and indestructible until end of turn.
Equip

Equipped creature gets +2/+2 and has protection from instants and from sorceries.
Whenever equipped creature deals combat damage to a player, create a Treasure token. When you next cast an instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy.
Equip

Change the text of target spell or permanent by replacing all instances of one creature type with another. The new creature type can't be Wall. (This effect lasts indefinitely.)