Look at the top X cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.
Flashback—, Exile X blue cards from your graveyard. (You may cast this card from your graveyard for its flashback cost, then exile it. You can't exile Flash of Insight to pay for its own flashback cost.)

Tap up to two target creatures.

You may reveal a sorcery card you own from outside the game and put it into your hand. Exile Burning Wish.

Target creature gets +1/+0 and gains first strike until end of turn.
Draw a card.

When this creature enters, put a +1/+1 counter on target creature.

: Add one mana of any color that a land you control could produce.

: Return target card from an opponent's graveyard to their hand. Put a +1/+1 counter on target creature.

Damage can't be prevented this turn.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Each player may exile any number of cards from their graveyard. Then each player loses 1 life for each card in their graveyard.
Draw a card.

Threshold — As long as there are seven or more cards in your graveyard, this enchantment has "Whenever an opponent casts a spell, you may put a creature card from your hand onto the battlefield."

Enchant creature
Enchanted creature gets +2/+2 and can't attack.

When this creature enters, you may put target card from a graveyard on the bottom of its owner's library.

Target player shuffles up to two target cards from their graveyard into their library.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Whenever a Bird is put into your graveyard from the battlefield, put a feather counter on this enchantment.
Bird creatures get +1/+1 for each feather counter on this enchantment.

This creature enters with two +1/+1 counters on it.
If damage would be dealt to this creature, prevent that damage. Remove a +1/+1 counter from this creature.

Prevent all damage that sources of the color of your choice would deal this turn.
Flashback—Tap an untapped white creature you control. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

You gain 1 life for each creature you control.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Creatures you control get +0/+2 until end of turn.
Threshold — If there are seven or more cards in your graveyard, choose a color. Creatures you control also gain protection from the chosen color until end of turn.

At the beginning of your upkeep, flip a coin. If you lose the flip, sacrifice this enchantment.
Whenever a player casts a spell, that player flips a coin. If they lose the flip, counter that spell.

At the beginning of combat on each opponent's turn, that player may exile a card from their graveyard. If the player doesn't, creatures they control can't attack you this turn.

Trample
This creature enters with two +1/+1 counters on it.
If damage would be dealt to this creature, prevent that damage. Remove a +1/+1 counter from this creature.
: Put a +1/+1 counter on this creature.

When this creature enters, exile a land you control.
When this creature leaves the battlefield, return the exiled card to the battlefield under its owner's control.

Enchant creature
When this Aura enters, draw a card.
Enchanted creature has protection from creatures.

Enchant creature
Enchanted creature gets +3/+3.
When enchanted creature dies, create a 3/3 green Elephant creature token.

Other players can't play lands or cast spells from their graveyards this turn. You may play lands and cast spells from other players' graveyards this turn as though those cards were in your graveyard.

Threshold — As long as there are seven or more cards in your graveyard, this creature gets +1/+1 and has ": Target attacking or blocking creature gets +3/+3 until end of turn."

This creature enters with two +1/+1 counters on it.
If damage would be dealt to this creature, prevent that damage. Remove a +1/+1 counter from this creature.

You may put a card you own from outside the game into your hand. You lose half your life, rounded up. Exile Death Wish.

Threshold — As long as there are seven or more cards in your graveyard, this creature gets +2/+2 and has "When this creature dies, you lose 4 life."

: Return target card from an opponent's graveyard to their hand. Prevent all damage that would be dealt to any target this turn by a source of your choice.

At the beginning of your upkeep, sacrifice this enchantment unless you discard a card.
Skip your draw step.
You have shroud. (You can't be the target of spells or abilities.)
Prevent all damage that would be dealt to you.

Whenever this creature deals combat damage to a player, return up to that many target permanents that player controls to their owner's hand.

Discard a card at random: This creature gets +2/+2 until end of turn unless a player has this creature deal 4 damage to them. Activate only once each turn.

Discard a card: This creature gains shroud until end of turn and can't be blocked this turn. (A creature with shroud can't be the target of spells or abilities.)

Whenever a player discards a card, you may pay . If you do, create a 1/1 white Spirit creature token with flying.

Discard two cards: Exile this creature. Return it to the battlefield under its owner's control at the beginning of the next end step.