This spell costs {1} less to cast for each card in exile you don't own.
Trample
Ward—Exile a nonland, nontoken permanent you control.

As an additional cost to cast this spell, sacrifice any number of creatures, then exile any number of creature cards from your graveyard. This spell costs {2} less to cast for each card or token sacrificed or exiled this way.
Flying

If you have more life than your starting life total, this spell costs {X} less to cast, where X is equal to the difference.
Trample
When Glacier Guardian enters, you may have it fight target creature you don't control.

Return up to three target creature cards from graveyards to the battlefield under your control.
Flashback—{2}{B}{B}, Sacrifice three creatures.

Exile all artifacts, creatures, and enchantments. Each player's life total becomes equal to their starting life total.

{4}{B}{B}, Exile Begin the Imperial Era from your hand: At the beginning of your next upkeep, you may cast Begin the Imperial Era from exile without paying its mana cost. Activate only as a sorcery.
You draw three cards and each opponent discards three cards. Each player loses 3 life.

Enchant player
Enchanted player may cast blue spells with mana value less than or equal to their devotion to blue without paying their mana costs.

This spell costs {1} less to cast for each kind of counter among permanents you control.
Reach, trample

This spell costs {1} less to cast for each instant and/or sorcery card in your graveyard.
When Heretic Hunters enters, you may discard your hand. If you do, draw a card and Heretic Hunters deals 2 damage to each opponent.

Favored
Whenever your Champion attacks, creatures you control get +2/+2 until end of turn.

Flash
This spell costs {1} less to cast for each permanent with flash you control and each instant card in your graveyard.
Ward {2}

Trample
When Scourge of Capitalism enters, it fights target creature with the greatest power or tied for the greatest power among creatures you don't control. Excess damage is dealt to that creature's controller instead.

When Vorpal Titan enters, destroy all nonbasic lands.

This spell can't be countered.
Haste
Whenever an opponent casts a spell during your turn or spends at least five mana to cast a spell, Aspirant's Bane deals 5 damage to that player.

Choose a color. Exile all permanents of the chosen color. Until the end of your next turn, if you would add {C}, instead add {C} and one mana of the chosen color.

Colossal Tarasque can't be blocked by creatures with power 2 or less.
{2}, Discard Colossal Tarasque: Search your library for a basic Forest card, reveal it, put it into your hand, then shuffle.

This spell costs {X} less to cast, where X is your greatest devotion to a single color.
Menace

Flash
When Conduit of Change enters, if you cast it, return all other nonland permanents to their owner's hands.
Spellcharge 7

Flash
Approval — When Congressional Kraken enters, return each nonland permanent with mana value less than or equal to the number of colors among permanents you control to their owners' hands.

Hexproof
When Dakran Shipcrusher enters, you may bless target creature.

Exile all creatures and all cards from each player's hand. Any player may play those cards during their turn for as long as they remain exiled, and mana of any type can be spent to cast those spells.
Exile Dawn of Peace.

Gain control of target creature.
{1}{U}, Discard Dominate Mind: Tap target creature. It doesn't untap during its controller's next untap step.

Create two tokens that are copies of target creature. Put a ward {2} counter on one of those tokens and a flying counter on the other.

Elephant of the Golden Palace enters with your choice of a lifelink counter or an indestructible counter on it if {W} was spent to cast it. The same is true for flying or ward {2} and {U}, deathtouch or menace and {B}, haste or double strike and {R}, and vigilance or trample and {G}.

Look at the top seven cards of your library. You may put an artifact card, a creature card, an enchantment card, a land card, and/or a planeswalker card from among them onto the battlefield. Put the rest on the bottom of your library in a random order.