Tap an untapped Octopus you control: Tap target permanent.

: Tap all creatures without flying.

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

Acceptable Losses deals 5 damage to target creature.

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.

Flying

, Discard a card: Return Amugaba to its owner's hand.

You gain 2 life for each card in your graveyard.

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

Enchant land

Enchanted land has ", Sacrifice a creature: You gain life equal to the sacrificed creature's toughness."

Sacrifice an Atog creature: Atogatog gets +X/+X until end of turn, where X is the sacrificed creature's power.

When Auramancer enters, you may return target enchantment card from your graveyard to your hand.

Flying (This creature can't be blocked except by creatures with flying or reach.)

When Aven Cloudchaser enters, destroy target enchantment.

Flying (This creature can't be blocked except by creatures with flying or reach.)

: Aven Flock gets +0/+1 until end of turn.

Flying, protection from red

Each player chooses a number of permanents they control equal to the number of permanents controlled by the player who controls the fewest, then sacrifices the rest. Each player discards cards the same way.

Flying

, Discard a card: Return Balshan Griffin to its owner's hand.

, Sacrifice Barbarian Lunatic: It deals 2 damage to target creature.

Destroy target artifact.

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

Whenever a creature blocks, Battle Strain deals 1 damage to that creature's controller.

Create a 4/4 green Beast creature token.

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

Blazing Salvo deals 3 damage to target creature unless that creature's controller has Blazing Salvo deal 5 damage to them.

Flying

At the beginning of your upkeep, mill a card.

Threshold — As long as seven or more cards are in your graveyard, Bloodcurdler gets +1/+1 and has "At the beginning of your end step, exile two cards from your graveyard."

: Put a fuse counter on target creature.

At the beginning of your upkeep, put a fuse counter on each creature with a fuse counter on it.

Whenever a creature has four or more fuse counters on it, remove all fuse counters from it and destroy it. That creature deals 4 damage to its controller.

Search your library for up to three creature cards, put them into your graveyard, then shuffle.

Threshold — , , Exile two cards from your graveyard: Target player discards a card. Activate only as a sorcery and only if seven or more cards are in your graveyard.

: Add . Cabal Pit deals 1 damage to you.

Threshold — , , Sacrifice Cabal Pit: Target creature gets -2/-2 until end of turn. Activate only if seven or more cards are in your graveyard.

Create a 3/3 green Elephant creature token.

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

Draw two cards, then discard two cards.

Flashback costs you pay cost less.

Flashback costs your opponents pay cost more.

Target player can't cast creature spells this turn.

Draw a card.

: Target player draws two cards, then discards two cards.

: Target player draws a card, then discards a card.

Flying

, Sacrifice a land: Draw a card.

, : Chainflinger deals 1 damage to any target.

Threshold — , : Chainflinger deals 2 damage to any target. Activate only if seven or more cards are in your graveyard.

Whenever you win a coin flip, put a luck counter on Chance Encounter.

At the beginning of your upkeep, if Chance Encounter has ten or more luck counters on it, you win the game.

Create a 1/1 green Squirrel creature token.

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

At the beginning of your upkeep, you may put a +1/+1 counter on Chlorophant.

Threshold — As long as seven or more cards are in your graveyard, Chlorophant has "At the beginning of your upkeep, you may put another +1/+1 counter on Chlorophant."

Flying

Cognivore's power and toughness are each equal to the number of instant cards in all graveyards.

Whenever a player discards a card, you may gain 1 life.

Sacrifice Crypt Creeper: Exile target card from a graveyard.

Choose any number of creatures target player controls. Choose the same number of creatures another target player controls. Those players exchange control of those creatures. <I>(This effect lasts indefinitely.)</I>

, : Add .

At the beginning of your upkeep, exile a card from your graveyard.

Threshold — As long as seven or more cards are in your graveyard, Decaying Soil has "Whenever a nontoken creature is put into your graveyard from the battlefield, you may pay . If you do, return that card to your hand."

Exile up to three target cards from a single graveyard.

Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

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

Tap all creatures without flying.

Destroy target artifact or land.

: Add .

, : Untap target land.

Search your library for a card, put that card into your hand, then shuffle.

, Discard a card: Regenerate Dirty Wererat.

Threshold — As long as seven or more cards are in your graveyard, Dirty Wererat gets +2/+2 and can't block.

White creatures get +1/+1.

Threshold — White creatures get an additional +1/+1 as long as seven or more cards are in your graveyard.

Dreamwinder can't attack unless defending player controls an Island.

, Sacrifice an Island: Target land becomes an Island until end of turn.

Enchant creature

Whenever enchanted creature is dealt damage, its controller creates that many 1/1 green Squirrel creature tokens.