Return all nonland permanents with mana value X or less to their owners' hands.

Return X target nonland permanents to their owners' hands.

Roll a d20 and add the number of cards in your hand.

1–14 | Draw X cards.

15+ | Scry X, then draw X cards.

Choose X. You may choose the same mode more than once.

• Each player sacrifices a nonartifact creature.

• Create a 3/3 black Dalek artifact creature token with menace.

• Each opponent discards a card.

Spend only black mana on X.

Drain Life deals X damage to any target. You gain life equal to the damage dealt, but not more life than the player's life total before the damage was dealt, the planeswalker's loyalty before the damage was dealt, or the creature's toughness.

Destroy X target nonblack creatures. Draw X cards.

Dwarven Catapult deals X damage divided evenly, rounded down, among all creatures target opponent controls.

Earthquake deals X damage to each creature without flying and each player.

Create X 2/2 white Samurai creature tokens with vigilance. They gain menace and haste until end of turn.

Each opponent creates X minus one 2/2 white Samurai creature tokens with vigilance.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Creatures with power less than Elusive Otter's power can't block it.

Delve (Each card you exile from your graveyard while casting this spell pays for .)

Create X tapped 2/2 black Zombie creature tokens.

Enchant creature

Endless Scream enters the battlefield with X scream counters on it.

Enchanted creature gets +1/+0 for each scream counter on Endless Scream.

Sunburst (This enters the battlefield with a charge counter on it for each color of mana spent to cast it.)

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

Reveal the top X cards of your library. Put all creature cards revealed this way into your hand and the rest on the bottom of your library in any order.

Create X 4/4 white Angel creature tokens with flying.

Miracle (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)

Exile the top X cards of your library. You may cast instant and sorcery spells with mana value X or less from among them without paying their mana costs. Then put all cards exiled this way that weren't cast into your graveyard.

Choose one —

• Target creature gets -X/-X until end of turn. You gain X life.

• Exile up to twice X target cards from graveyards.

This spell costs less to cast if an opponent has drawn four or more cards this turn.

Draw X cards.

Ravenous (This creature enters the battlefield with X +1/+1 counters on it. If X is 5 or more, draw a card when it enters.)

Bio-plasmic Barrage — When Exocrine enters the battlefield, it deals X damage to each player and each other creature.

Explosion deals X damage to any target. Target player draws X cards.

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

When Extraordinary Journey enters the battlefield, exile up to X target creatures. For each of those cards, its owner may play it for as long as it remains exiled.

Whenever one or more nontoken creatures enter the battlefield, if one or more of them entered from exile or was cast from exile, you draw a card. This ability triggers only once each turn.

Surge (You may cast this spell for its surge cost if you or a teammate has cast another spell this turn.)

Fall of the Titans deals X damage to each of up to two targets.

When Farmer Cotton enters the battlefield, create X 1/1 white Halfling creature tokens and X Food tokens. (They're artifacts with ", , Sacrifice this artifact: You gain 3 life.")

Fault Line deals X damage to each creature without flying and each player.

Feral Hydra enters the battlefield with X +1/+1 counters on it.

: Put a +1/+1 counter on Feral Hydra. Any player may activate this ability.

Search your library and/or graveyard for a creature card with mana value X or less and put it onto the battlefield. If you search your library this way, shuffle. If X is 10 or more, creatures you control get +X/+X and gain haste until end of turn.

Create X 2/2 white Soldier creature tokens with vigilance. If X is 10 or more, also create X 4/4 white Angel creature tokens with flying and vigilance.

Draw X cards. If X is 10 or more, instead shuffle your graveyard into your library, draw X cards, untap up to five lands, and you have no maximum hand size for the rest of the game.

Exile Finale of Revelation.

Create X 1/1 red Elemental Cat creature tokens with haste. Exile them at the beginning of the next end step.

Flashback—, Sacrifice X Mountains. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Flaming Gambit deals X damage to target player or planeswalker. That player or that planeswalker's controller may choose a creature they control and have Flaming Gambit deal that damage to it instead.

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Flip X coins. For each flip you win, create a 2/2 green Sheep creature token named Rabid Sheep.

Investigate X times. (Then exile this card. You may cast the creature later from exile.)

Create X 1/1 red Mercenary creature tokens with ": Target creature you control gets +1/+0 until end of turn. Activate only as a sorcery."

When Fractal Harness enters the battlefield, create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it and attach Fractal Harness to it.

Whenever equipped creature attacks, double the number of +1/+1 counters on it.

Equip

As Frankenstein's Monster enters the battlefield, exile X creature cards from your graveyard. If you can't, put Frankenstein's Monster into its owner's graveyard instead of onto the battlefield. For each creature card exiled this way, Frankenstein's Monster enters the battlefield with a +2/+0, +1/+1, or +0/+2 counter on it.

When Gadwick, the Wizened enters the battlefield, draw X cards.

Whenever you cast a blue spell, tap target nonland permanent an opponent controls.

Destroy each nonland permanent with mana value X or less.

When you cast this spell, reveal the top X cards of your library. You may put a nonland permanent card with mana value X or less from among them onto the battlefield. Then shuffle the rest into your library.

Genesis Hydra enters the battlefield with X +1/+1 counters on it.

Ghired's Belligerence deals X damage divided as you choose among any number of target creatures. Whenever a creature dealt damage this way dies this turn, populate. (Create a token that's a copy of a creature token you control.)

Tap X target creatures. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Vigilance, trample, haste

Goldvein Hydra enters the battlefield with X +1/+1 counters on it.

When Goldvein Hydra dies, create a number of tapped Treasure tokens equal to its power.

Reveal the top X plus one cards of your library. Choose a creature card and/or a land card from among them. Put those cards into your hand and the rest on the bottom of your library in a random order. If X is 5 or more, instead put the chosen cards onto the battlefield or into your hand and the rest on the bottom of your library in a random order.

Grenzo, Dungeon Warden enters the battlefield with X +1/+1 counters on it.

: Put the bottom card of your library into your graveyard. If it's a creature card with power less than or equal to Grenzo's power, put it onto the battlefield.

Distribute X +1/+1 counters among any number of target creatures you control. (Then exile this card. You may cast the creature later from exile.)

Gyrus, Waker of Corpses enters the battlefield with a number of +1/+1 counters on it equal to the amount of mana spent to cast it.

Whenever Gyrus attacks, you may exile target creature card with lesser power from your graveyard. If you do, create a token that's a copy of that card and that's tapped and attacking. Exile the token at end of combat.

Haldir, Lórien Lieutenant enters the battlefield with X +1/+1 counters on it.

Vigilance

: Until end of turn, other Elves you control gain vigilance and get +1/+1 for each +1/+1 counter on Haldir.

Heat Ray deals X damage to target creature.

Choose one —

• Destroy X target artifacts and/or enchantments.

• Target player gains twice X life.

Hooded Hydra enters the battlefield with X +1/+1 counters on it.

When Hooded Hydra dies, create a 1/1 green Snake creature token for each +1/+1 counter on it.

Morph

As Hooded Hydra is turned face up, put five +1/+1 counters on it.