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As an additional cost to cast this spell, discard X creature cards.

Return X target creatures to their owners' hands.

Untap target nonattacking creature. It gets +1/+3 until end of turn.

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

Flying

Nonbasic lands don't untap during their controllers' untap steps.

Search target opponent's library for a creature card and put that card onto the battlefield under your control. Then that player shuffles.

Destroy all lands or all creatures. Creatures destroyed this way can't be regenerated.

{green}G, {tap}↷: Target creature gets +0/+1 until end of turn.

{blue}U, {tap}↷: Put target creature you control on top of its owner's library.

Destroy target enchantment.

Cycling {2 generic}2 ({2}, Discard this card: Draw a card.)

{black}B{black}B: Target creature gains shadow until end of turn. (It can block or be blocked by only creatures with shadow.)

Shadow (This creature can block or be blocked by only creatures with shadow.)

Protection from black

Enchant creature

Whenever enchanted creature deals combat damage to a player, that player sacrifices a land of their choice.

Flying

As this creature enters, sacrifice any number of creatures. This creature's power becomes the total power of those creatures and its toughness becomes their total toughness.

{red}R: This creature gets +1/+0 until end of turn.

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.

Flare deals 1 damage to any target.

Draw a card at the beginning of the next turn's upkeep.

At end of combat, destroy each creature that blocked or was blocked this turn.

When an opponent plays a nonbasic land, if this permanent is an enchantment, it becomes a 3/3 Beast creature.

You may choose not to untap Hivis during your untap step.

{tap}↷: Gain control of target Dragon for as long as you control Hivis and Hivis remains tapped.

Hurricane deals X damage to each creature with flying and each player.

First strike

Cast this spell only if an opponent cast a creature spell this turn.

You may put a green creature card from your hand onto the battlefield.

Buyback {2 generic}2{blue}U (You may pay an additional {2}{U} as you cast this spell. If you do, put this card into your hand as it resolves.)

Tap target artifact, creature, or land.

At the beginning of each player's upkeep, return to its owner's hand each creature that player controls with power greater than the number of cards in their hand.

Enchant creature

Enchanted creature has "At the beginning of your upkeep, sacrifice this creature unless you pay its mana cost."

All creatures have "At the beginning of your upkeep, sacrifice this creature unless you pay {1 generic}1."

Counter target spell unless its controller pays {X}X. If that player doesn't, they tap all lands with mana abilities they control and lose all unspent mana.

{1 generic}1{white}W, {tap}↷: This creature loses this ability and becomes an Aura enchantment with enchant creature. Attach it to target creature. You may pay {white}W to end this effect.

Enchanted creature has first strike.

Untap target creature an opponent controls and gain control of it until end of turn. That creature gains haste until end of turn. When you lose control of the creature, tap it.

Put target card from your graveyard on top of your library.

{2 generic}2{green}G, {tap}↷, Sacrifice this creature: Destroy all enchantments of the color of your choice.

Whenever this creature deals damage to a player, that player gets a poison counter. The player gets another poison counter at the beginning of their next upkeep unless they pay {2 generic}2 before that step. (A player with ten or more poison counters loses the game.)

This land enters tapped.

{tap}↷: Add {colorless}C.

{tap}↷: Add {red}R or {white}W. This land deals 1 damage to you.

Flying

Whenever this creature deals damage to a player, tap target creature that player controls. That creature doesn't untap during its controller's untap step for as long as this creature remains on the battlefield.

Whenever a creature dies, you may pay {1 generic}1. If you do, you gain 1 life.

({T}: Add {B}.)

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.)

Discard a card: This creature gains shadow until end of turn. (It can block or be blocked by only creatures with shadow.)

Shadow (This creature can block or be blocked by only creatures with shadow.)

When an opponent casts a spell, if this permanent is an enchantment, it becomes a 3/3 Illusion creature with flying and "At the beginning of your upkeep, sacrifice this creature unless you pay {1 generic}1{blue}U."

Destroy target tapped creature.

Haste (This creature can attack and {T} as soon as it comes under your control.)

At the beginning of the end step, return this creature to its owner's hand. (Return it only if it's on the battlefield.)

{1 generic}1{red}R{red}R, {tap}↷: Search your library for a Dragon permanent card, put that card onto the battlefield, then shuffle. That Dragon gains haste until end of turn. Exile it at the beginning of the next end step.