If this artifact would enter, you may discard a land card instead. If you do, put this artifact onto the battlefield. If you don't, put it into its owner's graveyard.
: Add one mana of any color.

: Add .
, : Put target creature card from your graveyard on top of your library.

Whenever an opponent plays a land, you may put a land card from your hand onto the battlefield.

: The next 1 damage that would be dealt to this creature this turn is dealt to target creature you control instead.
: The next time a source of your choice would deal damage to target creature this turn, that damage is dealt to this creature instead.

Whenever a nontoken permanent is put into your graveyard from the battlefield, this artifact deals 1 damage to you.
Sacrifice a creature: Target opponent gains control of this artifact. (This effect lasts indefinitely.)

, Discard a card at random: Put a +1/+1 counter on target creature.

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)
Target land becomes a 2/2 creature that's still a land. (This effect lasts indefinitely.)

, Tap an untapped creature you control: You gain 2 life. Activate only as a sorcery.

Wall creatures can attack as though they didn't have defender.

Whenever a spell or ability an opponent controls causes a land to be put into your graveyard from the battlefield, return that card to the battlefield.

, : Reveal cards from the top of your library until you reveal a basic land card. Put that card into your hand and all other cards revealed this way into your graveyard.

: Target legendary creature gets +2/+2 until end of turn.

As long as the top card of your graveyard is a creature card, this creature has the full text of that card and has the text ": Discard a card." (This creature has that card's name, mana cost, color, types, abilities, power, and toughness.)
: Discard a card.

All creatures block each combat if able.
The attacking player chooses how each creature blocks each combat.

Shadow (This creature can block or be blocked by only creatures with shadow.)
Whenever this creature attacks, other creatures you control get +1/+1 until end of turn.

This creature enters with a +1/+1 counter on it.
Pay for each +1/+1 counter on this creature: Regenerate this creature. When it regenerates this way, put a +1/+1 counter on it.

Put a card from your hand on top of your library: Prevent all damage that would be dealt by target instant or sorcery spell this turn.

Creatures don't untap during their controllers' untap steps.
Whenever a creature enters, untap all creatures.

Whenever a player plays a land, that player draws a card.

, Sacrifice a creature: Destroy target nonblack creature.

Creatures with power greater than the number of cards in your hand can't attack.

Whenever a creature you control dies, each other player sacrifices a creature of their choice.

If you would draw a card, you may put a study counter on this enchantment instead.
Remove three study counters from this enchantment, Sacrifice this enchantment: Draw seven cards.

This creature enters with three +1/+1 counters on it.
, Remove a +1/+1 counter from this creature: Target player discards a card. Activate only as a sorcery.

This creature enters with three +1/+1 counters on it.
, Remove a +1/+1 counter from this creature: Put a +1/+1 counter on target creature.
, Remove a +1/+1 counter from this creature: Create a 1/1 green Spike creature token.

Untap all creatures you control and all creatures target opponent controls. You and that opponent each gain control of all creatures the other controls until end of turn. Those creatures gain haste until end of turn.

At the beginning of each upkeep, untap all creatures and lands.

Whenever a creature is put into your graveyard from the battlefield, put that card on top of your library.

Crovax enters with four +1/+1 counters on it.
At the beginning of your upkeep, you may sacrifice a creature. If you do, put a +1/+1 counter on Crovax. If you don't, remove a +1/+1 counter from Crovax.
: Crovax gains flying until end of turn.

Whenever a creature enters, if there are two or more other creatures on the battlefield, exile that creature. Return that card to the battlefield under its owner's control when this artifact leaves the battlefield.

Shadow (This creature can block or be blocked by only creatures with shadow.)
Whenever this creature attacks and isn't blocked, you may sacrifice it. If you do, gain control of target creature. (This effect lasts indefinitely.)

Destroy all nonbasic lands.

Flying
: Change the target of target spell or ability that targets only this creature. The new target must be a creature.

Flying
Revenant's power and toughness are each equal to the number of creature cards in your graveyard.

Flying (This creature can't be blocked except by creatures with flying or reach.)
Sacrifice this creature: It deals 2 damage to each creature without flying.
: Return this card from your graveyard to your hand. Activate only during your upkeep.

Rather than pay the mana cost for a spell, its controller may discard a card that shares a color with that spell.