+1: Draw a card, then put a card from your hand on top of your library. −1: Exile another target permanent you own, then return it to the battlefield under your control. −6: Choose left or right. Each player gains control of all nonland permanents other than Aminatou controlled by the next player in the chosen direction. Aminatou, the Fateshifter can be your commander.

Draw three cards, then put two cards from your hand on top of your library in any order.

Target player draws X cards plus an additional card for each time they've cast a commander from the command zone this game.

When Gadwick enters, draw X cards. Whenever you cast a blue spell, tap target nonland permanent an opponent controls.

Trample When Hugs enters, exile the top X cards of your library. Until the end of your next turn, you may play those cards. You may play an additional land on each of your turns.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle.

Each opponent loses two times X life. You gain life equal to the life lost this way.

Whenever you cast a spell with mana value 5 or greater, each opponent reveals the top card of their library. If any of those cards shares a card type with that spell, copy that spell, you may choose new targets for the copy, and each opponent draws a card. Otherwise, you draw a card. (A copy of a permanent spell becomes a token.)

When Niko Aris enters, create X Shard tokens. (They're enchantments with "{2}, Sacrifice this token: Scry 1, then draw a card.") +1: Up to one target creature you control can't be blocked this turn. Whenever that creature deals damage this turn, return it to its owner's hand. −1: Niko Aris deals 2 damage to target tapped creature for each card you've drawn this turn. −1: Create a Shard token.

When Rocco enters, if you cast it, you may search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle.

When you next cast an instant or sorcery spell this turn, copy that spell X times. You may choose new targets for the copies.

Target opponent exiles the top X cards of their library. You may cast any number of spells with mana value X or less from among them without paying their mana costs.

Search your library for a permanent card with mana value X or less, put it onto the battlefield, then shuffle.

Ravenous (This creature enters with X +1/+1 counters on it. If X is 5 or more, draw a card when it enters.) Bio-plasmic Barrage — When this creature enters, it deals X damage to each player and each other creature.

Destroy each nonland permanent with mana value X or less.

When you cast this spell, each player sacrifices X creatures. This creature enters with two +1/+1 counters on it for each creature sacrificed this way. Flying, trample

Choose one — • Destroy X target artifacts and/or enchantments. • Target player gains twice X life.

Choose one. If you control a commander as you cast this spell, you may choose both instead. • Breathe Flame — Klauth's Will deals X damage to each creature without flying. • Smash Relics — Destroy up to X target artifacts and/or enchantments.

Lavalanche deals X damage to target player or planeswalker and each creature that player or that planeswalker's controller controls.

Vigilance, trample This creature enters with X +1/+1 counters on it. When this creature enters, destroy any number of target artifacts and/or enchantments with total mana value X or less.

This creature enters with X +1/+1 counters on it. {2}{G}, Remove a +1/+1 counter from this creature: Destroy target artifact or enchantment.

Exile target creature. Its controller gains life equal to its power.

Reveal the top X cards of your library. Put all land cards from among them onto the battlefield tapped and the rest on the bottom of your library in a random order. Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, untap those lands.

{T}: Add one mana of any color in your commander's color identity.

Choose one — • Search your library for a creature or land card and reveal it. Put it onto the battlefield tapped if it's a land card. Otherwise, put it into your hand. Then shuffle. • Put a +1/+1 counter on target creature you control. It deals damage equal to its power to target creature you don't control. • Exile target artifact or enchantment.

{T}: For each color among permanents you control, add one mana of that color.

Reach When this creature enters, reveal the top five cards of your library. Put a land card from among them onto the battlefield and the rest into your graveyard. When this creature dies, you may exile it. If you do, put another target card from your graveyard on top of your library.

Lands you control have "{T}: Add one mana of any color." {T}: Add one mana of any color.

{3}, {T}: Double the amount of each type of unspent mana you have.

Whenever you cast a spell with {X} in its mana cost, put two charge counters on this artifact. {T}: Add one mana of any color. {T}: Add {C} for each charge counter on this artifact. Spend this mana only on costs that contain {X}.

Vigilance This creature gets +1/+1 for each color among permanents you control. {T}: For each color among permanents you control, add one mana of that color.

{T}: Add one mana of any color that a land an opponent controls could produce.

Spiritual Leader — At the beginning of combat on your turn, put a +1/+1 counter on target creature. Psychic Stimulus — {T}: Add {C}{C}. When you next cast a spell with {X} in its mana cost or activate an ability with {X} in its activation cost this turn, copy that spell or ability. You may choose new targets for the copy. (A copy of a permanent spell becomes a token.)

Strategic Coordinator — Basic lands you control have "{T}: Add {C}{C}. Spend this mana only on costs that contain {X}."

{T}: Add {C}{C}{C}{C}. Spend this mana only on costs that contain {X}.

When Rosheen enters, mill six cards. You may put a card with {X} in its mana cost from among them into your hand. {T}: Reveal any number of cards with {X} in their mana cost in your hand. Add {C}{C} for each card revealed this way. Spend this mana only on costs that contain {X}.

{T}: Add {C}{C}.

{T}: Add {G}{U}. Spend this mana only to cast spells with mana value 5 or greater or spells with {X} in their mana costs. {U}, {T}: Draw a card, then discard a card.

Whenever you cast a permanent spell with a mana cost that contains {X}, double the value of X. Whenever you cast an instant or sorcery spell or activate an ability, if that spell's mana cost or that ability's activation cost contains {X}, copy that spell or ability. You may choose new targets for the copy.

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.) Create X tapped 2/2 black Zombie creature tokens.

Create X 4/4 white Angel creature tokens with flying. Miracle {X}{W}{W} (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)

Trample This creature enters with X +1/+1 counters on it. When this creature dies, you gain life and draw cards equal to its power.

Maga enters with X +1/+1 counters on it. When Maga enters, target player loses life equal to the number of +1/+1 counters on it.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Create X 1/1 white Soldier creature tokens with lifelink.

When The Cyber-Controller enters, each opponent mills X cards. Put all creature cards milled this way onto the battlefield face down under your control. They're 2/2 Cyberman artifact creatures. Other artifact creatures you control get +1/+1.

Create X tapped 2/2 black Necron Warrior artifact creature tokens, then you gain life equal to the number of artifacts you control. Exile Their Number Is Legion. You may cast this card from your graveyard.