msem-instigator

Trample
Whenever Saghira, Divinity's Usurper attacks, you may pay {1}{G}. If you do, destroy target artifact, enchantment, or creature with flying.

When Sahra Poet-Priest enters, create a Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)
{R}: Sahra Poet-Priest gets +1/+0 until end of turn.

When Saia's Protege enters, gain control of target artifact or enchantment for as long as you control Saia's Protege.

Salome's Messenger enters tapped.
Whenever you cast your second spell each turn, you may return Salome's Messenger from your graveyard to your hand.

Whenever Sanctuary is dealt damage, you gain that much life.
All damage that would be dealt to another creature you control is dealt to Sanctuary instead.

Deathtouch

Vigilance
Chosen one ({W}{U}{B}{R}{G}: Transform this permanent.)

Whenever Sandbluff Inciter attacks, it deals damage to defending player equal to the number of tapped creatures you control.

Flying
Whenever Sandslinger attacks, you may tap target creature if you've gained life this turn.

Flash
Flying
When Sandstreamer enters, target permanent gains indestructible until end of turn.

Sanguine Oracle enters tapped.
{4}{B}, {T}, Sacrifice Sanguine Oracle: Target player discards two cards. Activate only as a sorcery.

Flash
Poisonous 2 (Whenever this creature deals combat damage to a player, that player gets two poison counters. A player with ten or more poison counters loses the game.)
When Sankataar Ambusher enters, if an opponent is poisoned, Sankataar Ambusher gets +2/+2 until end of turn.

Poisonous 2 (Whenever this creature deals combat damage to a player, that player gets two poison counters.)
Sankataar Coilborn gets +1/+1 as long as an opponent is poisoned.

{W}, {T}: Tap target creature.

Defender
This creature can attack as though it didn't have defender as long as a Pirate or Rogue entered under your control or you cast a noncreature spell this turn.

Flying
Tap three untapped Satrapies you control: Recruit. Activate only as a sorcery. (Create a 0/0 white Soldier Army creature token, then put a +1/+1 counter on each Army you control.)

Flying
Tap three untapped Satrapies you control: You may cast target card from your graveyard. Pay life equal to its mana value rather than pay its mana cost. If that spell would be put into a graveyard, exile it instead.

Chronicle (As this enters and after your draw step, add a lore counter. Stop after III.)
[Lore I-II] Create a 1/1 red Satyr creature token with “This creature can't block.”
[Lore III] Creatures you control get +1/+0 until end of turn.

Heroic — Whenever you cast a spell that targets Satyr Vigormage, choose one —
• Put a +1/+1 counter on Satyr Vigormage.
• Satyr Vigormage fights target creature you don't control.
• Search your library for a land card, reveal it, put it into your hand, then shuffle.

Whenever you cast a spell, you may pay {1}. If you do, put a storage counter on Savings Broker.
Remove X storage counters from Savings Broker: Add {C} for each storage counter removed this way. You gain X life.

Whenever Savvy Saboteur attacks, target creature defending player controls can't block target creature you control this turn.

Deathtouch
Whenever Scaleblight Bokor attacks, it gets +1/+1 until end of turn for each Curse attached to defending player.

Whenever another creature you control enters, if its power is greater than Scalebruiser's power, put a +1/+1 counter on Scalebruiser.
As long as Scalebruiser's power is 4 or greater, each other creature you control enters with an additional +1/+1 counter on it.

When Scaled Lurker enters, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

Poisonous 4 (Whenever this creature deals combat damage to a player, that player gets four poison counters.)
At the beginning of combat on each of your turns, if an opponent is poisoned, creatures you control gain trample until end of turn.