Surface {2}{B}{G}{U}. Riverbed Snapper surfaces transformed.

Flash
If a player would search a library for one or more cards, they reveal those cards, and can't find nonbasic cards.

Tap up to two target creatures. Put a stun counter on one of them.

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.

Trample
Whenever you cast a noncreature spell, put a +1/+1 counter on this Vehicle.
Crew 1

Choose one —
• Each opponent sacrifices a creature that's one or fewer colors.
• Each opponent sacrifices a creature that's two or more colors.

Return target artifact card from your graveyard to your hand.

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.

Choose one or both —
• Target creature gets +1/+1 until end of turn.
• Return target creature to its owner's hand.

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.

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.

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.

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

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

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