Spooky20

Draw X cards. For each card drawn this way, discard a card unless you sacrifice a permanent.

Psychosis Crawler's power and toughness are each equal to the number of cards in your hand. Whenever you draw a card, each opponent loses 1 life.

This artifact enters tapped. Domain — {T}: Add X mana in any combination of colors, where X is the number of basic land types among lands you control.

This spell costs {1} less to cast for each creature your opponents control. When this creature enters, put a +1/+1 counter on each other creature y...

Destroy all creatures, then create an X/X colorless Phyrexian Horror artifact creature token, where X is the number of creatures destroyed this way.

Return all artifact and enchantment cards from all graveyards to the battlefield under their owners' control. (Auras with nothing to enchant remain...

The owner of target nonland permanent shuffles it into their library, then draws two cards.

At the beginning of each player's upkeep, that player chooses target player who controls more creatures than they do and is their opponent. The fir...

This artifact enters tapped. {1}, {T}: Destroy all artifacts, creatures, and enchantments.

At the beginning of your upkeep, put a +1/+1 counter on this creature. At the beginning of your end step, destroy each creature with mana value equ...

At the beginning of your upkeep, you may have target opponent discard a card at random. Whenever an opponent discards a card, you may create a 1/1 ...

When this creature enters, create four 1/1 colorless Myr artifact creature tokens. Whenever this creature attacks, you may tap X untapped Myr you c...

Devour 2 (As this creature enters, you may sacrifice any number of creatures. It enters with twice that many +1/+1 counters on it.) At the beginnin...

({T}: Add {G}.) As this land enters, you may reveal a Treefolk card from your hand. If you don't, this land enters tapped. {T}: Add {W} or {B}. Thi...

Hideaway 4 (When this land enters, look at the top four cards of your library, exile one face down, then put the rest on the bottom in a random ord...

Each other creature becomes a copy of target nonlegendary creature until end of turn.

Changeling (This card is every creature type.) {X}: Until end of turn, creatures you control have base power and toughness X/X and gain all creatur...

Join forces — Starting with you, each player may pay any amount of mana. Each player draws X cards, where X is the total amount of mana paid this way.

Choose one — • Exile all artifacts. • Exile all creatures. • Exile all enchantments. • Exile all planeswalkers.

Whenever another creature you control with power 2 or less enters, you may pay {1}. If you do, draw a card.

Master of Etherium's power and toughness are each equal to the number of artifacts you control. Other artifact creatures you control get +1/+1.

Reveal the top ten cards of your library. Starting with the next opponent in turn order, each opponent chooses a different nonland card from among ...

Trample Whenever a player casts a spell, put a +1/+1 counter on this creature.

{2}{B}, {T}, Exile this creature: Until end of turn, you may play lands and cast spells from your graveyard. If a card would be put into your grave...