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

Look at target opponent's hand and choose X cards from it. That player discards those cards.

Flying, protection from red

{white}W, {tap}↷: This creature gets +0/+3 until end of turn.

Enchant creature

When this Aura enters, untap enchanted creature.

You control enchanted creature.

When enchanted creature dies, return that card to the battlefield under its owner's control.

Until end of turn, target player can't cast instant or sorcery spells, and that player can't activate abilities that aren't mana abilities.

Draw a card.

As an additional cost to cast this spell, sacrifice a blue permanent.

Counter target spell.

You may discard a Plains card rather than pay this spell's mana cost.

Destroy target artifact or enchantment.

Whenever this creature blocks or becomes blocked by a green or white creature, destroy that creature at end of combat.

Cumulative upkeep—Put a -1/-1 counter on this creature. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Enchant creature

Enchanted creature has flying.

Threshold — Enchanted creature has shroud as long as there are seven or more cards in your graveyard. (It can't be the target of spells or abilities.)

Tap an untapped Octopus you control: Tap target permanent.

{blue}U{blue}U{blue}U: Tap all creatures without flying.

Switch target creature's power and toughness until end of turn.

All creatures have protection from black.

All creatures have protection from red.

Counter target spell. You gain 3 life.

When this creature dies, destroy all creatures blocking or blocked by it. They can't be regenerated.

If you would draw a card, you may instead choose land or nonland and reveal cards from the top of your library until you reveal a card of the chosen kind. Put that card into your hand and put all other cards revealed this way on the bottom of your library in any order.

When this creature dies, each player sacrifices a creature of their choice.

Flying

When this creature enters, target player discards two cards.

{black}B, {tap}↷: Tap target creature. This creature deals damage equal to its power to that creature.

Flying

Whenever this creature deals damage to a player, that player discards a card.

When this creature dies, you may exile it. If you do, search your library for an enchantment card, put that card onto the battlefield, then shuffle.

When this creature enters, you may put an Aura card from your hand onto the battlefield attached to this creature.

Target creature gains haste until end of turn.

Draw a card.

Target creature gets +X/+X until end of turn, where X is the greatest mana value among permanents you control.

As an additional cost to cast this spell, discard a card at random.

Acceptable Losses deals 5 damage to target creature.

Draw a card, then draw cards equal to the number of cards named Accumulated Knowledge in all graveyards.

When this creature enters, sacrifice a creature.

{4 generic}4, {tap}↷: Whenever target creature deals combat damage to a non-Wall creature this turn, destroy that non-Wall creature. When the targeted creature leaves the battlefield this turn, sacrifice this artifact. Activate only before blockers are declared.

All Slivers have "{2 generic}2, Sacrifice this permanent: This permanent deals 2 damage to any target."

Acidic Soil deals damage to each player equal to the number of lands they control.

Create two 1/1 green Squirrel creature tokens.

Flashback—{1 generic}1{green}G, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Echo {1 generic}1{green}G (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

Choose one —

• Destroy target blue permanent.

• Return target Island to its owner's hand.

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

{tap}↷: Add {blue}U or {colorless}C{blue}U. Spend this mana only to pay cumulative upkeep costs.

Choose a color. Target player reveals their hand and you choose a card of that color from it. That player discards that card.

First strike

{white}W: Target creature gains first strike until end of turn.

{1 generic}1: The next time an instant or sorcery spell would deal damage to you this turn, that spell deals that damage to its controller instead.

{1 generic}1, {tap}↷: Target 1/1 creature gets +1/+2 until end of turn.

Flying

{1 generic}1{blue}U{blue}U: Exile the top card of your library. Until end of turn, you may play that card. (Reveal the card as you exile it.)

Flying

This creature can't block.

Whenever a player casts a creature spell, that player sacrifices a permanent of their choice unless they pay {1 generic}1.

Return up to X target creatures to their owners' hands, where X is one plus the number of cards named Aether Burst in all graveyards as you cast this spell.

Whenever a Beast you control enters, you may have it deal 4 damage to target opponent or planeswalker.

Whenever a creature enters, this enchantment deals 2 damage to it.

Return target creature to its owner's hand. Create X 1/1 green Saproling creature tokens, where X is that creature's mana value.

At the beginning of your upkeep, discard a card at random. If you discard a creature card this way, return it from your graveyard to the battlefield unless any player pays 5 life.

Whenever an opponent casts a creature spell, this enchantment deals 1 damage to that player.

Creature spells can't be cast.

Pay 4 life: Destroy this enchantment. It can't be regenerated. Any player may activate this ability.

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

Return X target creatures to their owners' hands.

Target creature gets -1/-1 until end of turn.

Draw a card.

This enchantment enters with three +1/+1 counters on it.

At the beginning of your upkeep, move a +1/+1 counter from this enchantment onto target creature.

When this enchantment has no +1/+1 counters on it, sacrifice it.

Destroy target creature. It can't be regenerated. Its controller creates a 1/1 white Spirit creature token with flying.

Destroy target artifact, creature, or land. Aftershock deals 3 damage to you.

Defender (This creature can't attack.)

Flying

When this creature blocks, it becomes a Bird Giant, and it loses defender. (It's no longer a Wall. This effect lasts indefinitely.)

{1 generic}1{black}B, Sacrifice a land: Target creature gets +2/+0 until end of turn.

{red}R: Add {black}B.

{3 generic}3{red}R{red}R: Untap all creatures you control. After this main phase, there is an additional combat phase followed by an additional main phase. Activate only as a sorcery.

Enchant non-Wall creature

Enchanted creature has first strike and trample.

At the beginning of the end step of enchanted creature's controller, destroy that creature if it didn't attack this turn.