Boseiju, Who Shelters All enters the battlefield tapped.

{T}, Pay 2 life: Add {C}. If that mana is spent on an instant or sorcery spell, that spell can't be countered.

Flying

Whenever an opponent draws a card, you may draw two cards.

At the beginning of your upkeep, if an opponent controls three or more creatures, sacrifice Defense of the Heart, search your library for up to two creature cards, put those cards onto the battlefield, then shuffle.

Counter target spell. If the spell is countered this way, exile it with three time counters on it instead of putting it into its owner's graveyard. If it doesn't have suspend, it gains suspend. (At the beginning of its owner's upkeep, remove a time counter from that card. When the last is removed, the player plays it without paying its mana cost. If it's a creature, it has haste.)

Whenever you cast your first instant or sorcery spell each turn, copy that spell. You may choose new targets for the copy.

At the beginning of each player's upkeep, that player mills X cards, where X is the number of cards in their hand.

Creatures with power greater than the number of cards in your hand can't attack.

Whenever another creature enters the battlefield, you gain 1 life.

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

Threshold -- If seven or more cards are in your graveyard, instead search your library for up to three basic land cards, put them onto the battlefield tapped, then shuffle.

Whenever a creature dies, that creature's controller may draw a card.

Creatures you control have haste. (They can attack and {T} as soon as they come under your control.)

Whenever Fleet Swallower attacks, target player mills half their library, rounded up.

Haste

Whenever you discard a card, Glint-Horn Buccaneer deals 1 damage to each opponent.

{1}{R}, Discard a card: Draw a card. Activate only if Glint-Horn Buccaneer is attacking.

Tap an untapped creature you control: Target player mills a card.

+2: Each player draws a card.

-1: Target player draws a card.

-10: Target player mills twenty cards.

+1: Draw a card. Target player mills a card.

0: Target player mills ten cards.

-7: Any number of target players each draw twenty cards.

Target player draws cards equal to the number of cards in their hand, then discards that many cards.

Kicker {3}{U}

Each opponent mills eight cards. If this spell was kicked, instead each opponent mills half their library, rounded up.

Counter target spell unless its controller pays {3}.

Return target instant or sorcery card from your graveyard to your hand.

Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Search your library for a Forest card, put that card onto the battlefield, then shuffle.

Landfall -- Whenever a land enters the battlefield under your control, each opponent mills three cards. (To mill a card, a player puts the top card of their library into their graveyard.)

Flying

{5}{R}, Exile Runehorn Hellkite from your graveyard: Each player discards their hand, then draws seven cards.

{T}: Add {C}.

{2}, {T}, Sacrifice a Desert: Exile all graveyards.

Untap target creature. After this main phase, there is an additional combat phase followed by an additional main phase.

Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Whenever Shocker deals damage to a player, that player discards all the cards in their hand, then draws that many cards.

Search your library for up to two Forest cards, put them onto the battlefield, then shuffle.

Flash

When Snapcaster Mage enters the battlefield, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. (You may cast that card from your graveyard for its flashback cost. Then exile it.)

Counter target spell. If that spell is countered this way, put it on the bottom of its owner's library instead of into that player's graveyard. Put Spell Crumple on the bottom of its owner's library.

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.)

Equip {1}

Choose one --

• Each player shuffles their hand and graveyard into their library.

• Each player draws seven cards.

Entwine {2} (Choose both if you pay the entwine cost.)

{T}, Sacrifice Tormod's Crypt: Exile target player's graveyard.

When you cast this spell, exile two target permanents.

Indestructible

Whenever Ulamog, the Ceaseless Hunger attacks, defending player exiles the top twenty cards of their library.

Destroy target nonbasic land you don't control and target nonbasic land of an opponent's choice you don't control.

Volcanic Offering deals 7 damage to target creature you don't control and 7 damage to target creature of an opponent's choice you don't control.

When Wildfire Devils enters the battlefield and at the beginning of your upkeep, choose a player at random. That player exiles an instant or sorcery card from their graveyard. Copy that card. You may cast the copy without paying its mana cost.