Whenever a land you control enters, scry 1. If that land is a Ruin, scry 2 instead.

When Seer of the Aspirants enters, surveil 1.
Wander {2}{G}

Trample
When Seismic Chimera enters, bless target creature.

Vigilance
Whenever Selective Truthseeker or another nontoken creature you control enters, surveil 1. When you put a nonland card into your graveyard this way, you gain 1 life.

Vigilance
{1}, {T}: Tap target creature.

Approval — When Senators' Chauffeur enters, return up to one target creature card with mana value less than or equal to the number of colors among permanents you control from your graveyard to the battlefield.

Serpentine Woods enters tapped.
{T}: Add {B} or {G}.
{2}{B}{G}, {T}, Sacrifice Serpentine Woods: Draw a card.

{B}, Sacrifice Serrated Fossil: Choose a nonland card name. Target player reveals their hand and discards a card with that name if able. Activate only as a sorcery.
Surface {3}{B}{B}. Serrated Fossil surfaces transformed.

Whenever a nontoken creature you control dies, create a token that's a copy of it, except it's a Minion and has decayed.

At the beginning of your end step, put a +1/+1 counter on each tapped creature you control.
{G}{W}{U}, Remove five counters from among creatures you control, Sacrifice Severin's Masterwork: Create Chaneryx, Perfect Lifeform, a legendary 10/10 green, white, and blue Leviathan creature token with ward {10}.

You may remove +1/+1 counters from creatures you control as though they were loyalty counters on Severin, Sparkmind to pay its loyalty costs.
[0]: Create a 0/0 colorless Robot artifact creature token with two +1/+1 counters on it.
[–2]: You may tap or untap each of up to three target permanents.
[–7]: If it isn't an extra turn, take an extra turn after this one.

When Shadow Sky enters and whenever you cast a spell, each creature target player controls gets -1/-1 until end of turn.

When Shaman of Rime's Fury enters, create a 0/0 colorless Spirit creature token. Put a number of +1/+1 counters on that token equal to the total number of instant and/or sorcery cards you own in exile and in your graveyard.

Solidarity
You may look at the top card of your library any time.
You may cast creature spells that have a creature type no creature you control does from the top of your library.

Flying, vigilance
{1}, Discard a card: Sharlate gains indestructible until end of turn.
Each spell an opponent casts costs {VP} more to cast for each other spell that player has cast this turn.

Enchant creature you control
When Shatter the Reflection enters, you may destroy target artifact or enchantment.
Enchanted creature gets +1/+0 and has deathtouch.

Shell Cove enters tapped.
{T}: Add {G} or {U}.
{9}{G/U}: Shell Cove becomes a 7/7 green and blue Leviathan creature with ward {3} until end of turn. It's still a land. This ability costs {X} less to activate, where X is your devotion to green and blue. Activate only once each turn.

Vigilance
Whenever you cast a spell from anywhere other than your hand, put a +1/+1 counter on Shepherd of Steel.
When Shepherd of Steel dies, put its counters on target creature you control.

Whenever Shining Angler attacks, target creature an opponent controls blocks Shining Angler this turn if able and other creatures can't block Shining Angler this turn.
Surface {4}{B}{G}{U}

Menace
Whenever Ship Shredder enters or you cast a spell from your graveyard, each opponent loses 2 life and you gain 2 life.

Whenever you activate an ability that targets Shiver Elemental, you may copy that ability. You may choose new targets for the copy.

Defender
Shoreline Crasher gets +2/+0 and can attack as though it didn't have defender as long as it is enchanted.

Flying
Short-Fused Firebird attacks each combat if able.
Whenever Short-Fused Firebird attacks, the next flashback cost you pay this turn costs {2} less.

Flying
Ward—Sacrifice a nonland, nontoken permanent.
Whenever a creature dies, Shredding Dragon deals 1 damage to any target.

At the beginning of combat on your turn, you gain 1 life. If you control three or more Shrines, instead you gain 3 life.