You gain 6 life.
Journey.

{T}, Waste a nonwastes land you control: Tap target creature.

Flying
Sapphiric Hatchling gets +1/+1 as long as you control another Dragon.
{1}{R}: Sapphiric Hatchling gets +1/+0 until end of turn.

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

When Savor the Torment enters, put two -1/-1 counters on target creature.
Whenever a creature dies, you gain 1 life for each -1/-1 counter on it.

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.

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

Whenever Scattering Swine deals combat damage to a player, you may return a permanent you control to its owner's hand. If you do, defending player loses 3 life unless they discard a card that shares a type with the returned permanent.

Sacrifice another creature: This creature gets +2/+1 until end of turn. Activate only once each turn.

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.

Scry 2, then draw a card.
Flashback {4}{U}

At the beginning of your upkeep, you may pay 2 life. If you do, Scowling Brawler gets +2/+0 until end of turn.
{1}{R}: Target creature can't block Scowling Brawler this turn.

Flying
Creatures you control with base power 1 or less get +1/+0.

Flow — {4}{W}: Create a tapped 0/0 colorless Golem artifact creature token with “This creature gets +1/+1 for each artifact you control.”

Scuttle Tank enters with a defender counter on it.

When Sea Breeze enters, return up to one target creature to its owner's hand, then surveil 1.

Look at the top two cards of your library. Put one into your hand and the other into your graveyard.
Surface {2}{U}

Flash
When Seal Away enters, exile target tapped creature an opponent controls until Seal Away leaves the battlefield.

At the beginning of each end step, create a 2/2 white and blue Seal Orb creature token if you activated two or more nonmana abilities this turn.
{W}{U}: Scry 1. You gain 1 life.

Target opponent reveals their hand. You choose a nonland card from it. That player discards that card. You lose 1 life.
Invoke {5}{B}{B}

Flash
{U}, Sacrifice Seal of Approval: Counter target spell unless its controller pays {2}.

Target player reveals their hand. You may choose a nonland card from it. If you do, that player discards that card. Otherwise, draw a card.

Scry 3, then reveal the top card of your library. If it's a creature card, put it into your hand.

Search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle.
Undercover

Lifelink
Whenever Secluded Gorgon dies, you may bless target creature.