msem-instigator

When Sunset Cliffs Lawman enters, you may post a bounty on target creature. (Put a bounty counter on that creature. It has “When this creature dies, each opponent draws a card” as long as it has a bounty counter on it.)

When Sunset Cliffs Patron enters, you may post a bounty on target creature. (Put a bounty counter on that creature. It has “When this creature dies, each opponent draws a card” as long as it has a bounty counter on it.)

Flash
Flying
When Sunset Herald enters, if it was cast, return to the battlefield all creature cards from your graveyard that were put there from the battlefield this turn.

When Sunset Monastery enters, draw a card, then put a card from your hand on the bottom of your library.
{T}: Add {C}.

Sunspear Surge deals 2 damage to target creature and 1 damage to each other creature.

({T}: Add {W}.)
Sunstage enters tapped.
When Sunstage enters, creatures you control get +0/+1 until end of turn.

Exile target attacking or blocking creature with power 4 or less.

Sunswept Grange enters tapped. When it enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
{T}: Add {R} or {W}.

Flying (This creature can't be blocked except by creatures with flying or reach.)

{T}, Pay 1 life: Add {R}.
{T}, Pay 1 life, Sacrifice Sunwashed Spires: Search your library for a Mountain card, put it onto the battlefield tapped, then shuffle.

Haste
At the beginning of your end step, return Sunwatcher Aspirant to its owner's hand.

Sunwing has flying as long as it's your turn.

When Sunwright Scion enters, put a +1/+1 counter on each other creature you control.
At the beginning of each combat, you may have target creature with a +1/+1 counter on it gain your choice of vigilance, lifelink, or trample until end of turn.

Enchant creature
Enchanted creature gets +3/+3, has trample, and can only attack alone.

Whenever you cast a spell, harmonize. (Trigger up to one harmony of a permanent you control.)
Harmony — Target permanent you control becomes a 2/2 creature with flying in addition to its other types until end of turn.

Target creature gets +2/+0 until end of turn and gains “When this creature dies, return it to the battlefield tapped under its owner's control.”

You can't cast this spell if you've cast another spell this turn.
Add seven mana in any combination of colors. Spend this mana only to cast red spells with mana value 6 or greater without {X} in their mana cost.

As Superset enters, choose two abilities from among flying, first strike, lifelink, prowess, and vigilance.
Each creature you control with exactly one of the chosen abilities has the other chosen ability.

Whenever Supplanter of Realities attacks, proliferate. (You choose any number of permanents and/or players with counters on them, then give each another kind of a counter already there.)
Sacrifice another permanent: Supplanter of Realities gains indestructible until end of turn. Tap it.

Menagerie — When Supply Hauler enters, if there are five or more creature types among creatures you control, you may search your library for an artifact card, reveal it, put it into your hand, then shuffle.

Supply Run costs {2} less to cast if a creature you controlled attacked this turn and wasn't blocked.
Draw two cards.

Equipped creature has vigilance and “{T}: Add one mana of any color.”
Equip {1}

You may sacrifice three Treasures rather than pay this spell's mana cost.
Flying, trample, haste

Each creature with a law counter on it can't attack or block.
{2}{W}, {T}: Remove all law counters from all permanents, then put a law counter on target creature.

Whenever Supreme Mechanothurge or another artifact you control enters, up to one target artifact you control becomes a copy of another target artifact or creature you control, except it's an artifact in addition to its other types.