Chalice of the Void enters the battlefield with X charge counters on it.
Whenever a player casts a spell with converted mana cost equal to the number of charge counters on Chalice of the Void, counter that spell.

: Add to your mana pool.
, Sacrifice Wasteland: Destroy target nonbasic land.

Return up to three target land cards from your graveyard to your hand.
Dredge 3

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

, Pay 1 life, Sacrifice Wooded Foothills: Search your library for a Mountain or Forest card and put it onto the battlefield. Then shuffle your library.

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. (Artifact, creature, enchantment, instant, land, planeswalker, sorcery, and tribal are card types.)

At the beginning of your upkeep, reveal the top card of your library and put that card into your hand. You lose life equal to its converted mana cost.

At the beginning of your upkeep, reveal the top card of your library. If it's a land card, put it into your graveyard and repeat this process.
Whenever a land card is put into your graveyard from anywhere, put a +1/+1 counter on Countryside Crusher.

Tranquil Thicket enters the battlefield tapped.
: Add to your mana pool.
Cycling

Forgotten Cave enters the battlefield tapped.
: Add to your mana pool.
Cycling

Sunburst
, Sacrifice Engineered Explosives: Destroy each nonland permanent with converted mana cost equal to the number of charge counters on Engineered Explosives.

Discard a land card: Seismic Assault deals 2 damage to target creature or player.

As an additional cost to cast Devastating Dreams, discard X cards at random.
Each player sacrifices X lands. Devastating Dreams deals X damage to each creature.

, Pay 1 life, Sacrifice Bloodstained Mire: Search your library for a Swamp or Mountain card and put it onto the battlefield. Then shuffle your library.

Trample
Terravore's power and toughness are each equal to the number of land cards in all graveyards.

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

Destroy target nonland permanent and all other permanents with the same name as that permanent.

Target player shuffles up to three target cards from his or her graveyard into his or her library.
Draw a card.
When Gaea's Blessing is put into your graveyard from your library, shuffle your graveyard into your library.

Destroy target artifact.
Flashback

Noncreature spells cost more to cast.

If an opponent cast three or more spells this turn, you may pay rather than pay Mindbreak Trap's mana cost.
Exile any number of target spells.

If Leyline of the Void is in your opening hand, you may begin the game with it on the battlefield.
If a card would be put into an opponent's graveyard from anywhere, exile it instead.