Flash
Flying

This spell costs {X} less to cast, where X is the amount of life you have more than your starting life total
Lifelink
When Rose Garden Guardian enters, put a +1/+1 counter on each other creature you control with lifelink.

When Rotroot Hauler enters, mill three cards, then you may put a permanent card in your graveyard on top of your library.

Vigilance
When Royal Templar enters, target creature gets +2/+0 and gains vigilance and indestructible until end of turn.
Cybersoul {3}{W}

Target creature you control gets +2/+2 and gains indestructible until end of turn. If it was the target of another spell or ability this turn, create two 1/1 white Bird creature tokens with flying.

Trample
Ruin, the First Shard enters with a +1/+1 counter on it for each mana spent to cast it.

Destroy target artifact or enchantment. If it was a token, you draw a card and gain 2 life.

Flashback costs you pay cost {2} less.
{R}, {T}, Discard a card: Draw a card.

Reach
{1}, Sacrifice a land: Put a +1/+1 counter on Runerock Automaton.

Runway Mech enters with a +1/+1 counter on it.

Draw three cards, then discard a card. If you controlled a white permanent as you cast this spell, tap up to one target nonland permanent.

{VP}{VP}, Sacrifice another creature: Draw a card.

Instant and sorcery spells with mana value 4 or greater you cast cost {1} less to cast.
{U}{R}, Sacrifice Samacris: Return target instant or sorcery card from your graveyard to your hand. The next spell you cast this turn with the same name as that card costs {2} less to cast.

Flash
When Sanctum of the Two Truths enters, draw two cards.
Spellcharge 4

[+1]: Choose up to two target creatures. Until your next turn, when one of them leaves the battlefield, exile the other.
[0]: Reveal the top card of your library. You may reveal a card you own from outside the game that shares a mana value or card type with the revealed card. Put one of those cards into your hand and exile the rest.
[–7]: For each permanent on the battlefield, create a token that's a copy of it.

Sashanki, Destiny's Chosen can't be blocked alone except by multicolored creatures.
Whenever Sashanki, Destiny's Chosen attacks, another target creature you control gets +X/+X until end of turn, where X is Sashanki's power.

Prowess
When Satyr Arsonist enters, destroy target nonbasic land. Its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle.

Hexproof from permanents

Whenever you cast an instant or sorcery spell, choose one that hasn't been chosen this turn —
• Create a 1/1 colorless Construct artifact creature token.
• Discard a card, then draw a card.
• Add one mana of any type.

{1}{R}, {T}, Discard a card: Draw a card. Scalding Crucible deals 1 damage to each opponent.
Spellcharge 5

As an additional cost to cast this spell, exile X cards from your graveyard.
You draw X cards and gain X life, then each opponent loses X life.

Players can't gain life.
Whenever a player casts a spell, Scathing Remarks deals 1 damage to that player for each of that spell's colors.

Choose one —
• Destroy target artifact.
• Destroy target enchantment.
• Exile target card from a graveyard.

This spell can't be countered.
Players can't gain life.
{1}{R}: Scorching Condemnation becomes a 4/4 red Elemental creature with trample and haste until end of turn. Activate only during your turn.

{3}, {T}, Sacrifice Scorching Illuminator: Return target instant or sorcery card from your graveyard to your hand. Add one mana of any color.