Buyback costs cost less.

, Sacrifice Memory Jar: Each player exiles all cards from their hand face down and draws seven cards. At the beginning of the next end step, each player discards their hand and returns to their hand each card they exiled this way.

When Memory Test enters, target opponent exiles cards from the bottom of their library until they exile five nonland cards, then turns those nonland cards face down.
Visit — Name the exiled face-down cards, then look at them. If you named them correctly, turn them face up, then claim the prize!
Prize — Create three 1/1 red Balloon creature tokens with flying, then sacrifice Memory Test and open an Attraction.

At the beginning of your end step, if you didn't play a land this turn, you may draw a card.

This land enters tapped.
: Put a storage counter on this land.
, Remove any number of storage counters from this land: Add for each storage counter removed this way.

, : Put a winch counter on this artifact.
, Remove X winch counters from this artifact: You may put a creature card with mana value X from your hand onto the battlefield.

, , Tap X untapped artifacts you control: Look at the top X cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

Visit — Creatures you control with power 2 or less gain horsemanship until end of turn.

Whenever a permanent becomes untapped, that permanent's controller mills a card.

As this creature enters, choose a creature type.
This creature is the chosen type in addition to its other types.
Each other creature you control of the chosen type enters with an additional +1/+1 counter on it.

When this artifact enters, you draw a card and you lose 1 life.
, Sacrifice this artifact: You draw a card and you lose 1 life.

This spell costs less to cast, where X is the total mana value of noncreature artifacts you control.
Sacrifice two artifacts: Return this card from your graveyard to your hand.

: Reveal any number of artifact cards in your hand. Add for each card revealed this way.

: Choose a color of a permanent you control. Add one mana of that color.

When this creature enters, destroy target nonland permanent an opponent controls.

When this Equipment enters, destroy target permanent.
Equipped creature gets +3/+3.
Equip

When this artifact enters, it deals 2 damage to any target.
: Add one mana of any color.

When Meteorite enters, it deals 2 damage to any target.
: Add one mana of any color.

This land enters tapped.
When this land enters, surveil 1.