msem-instigator

Enchant creature
Enchanted creature can't attack or block.

This creature can't be blocked by creatures with power less than the number of creatures you control.
{3}{G}: Create a 1/1 white Peasant creature token.

{T}: Add {C}.
{5}{R}{G}, {T}: Transform Settled Satrapy.

{2}: Settlement Guardian gets +1/+1 until end of turn for each color of mana spent to activate this ability.

Settlement Scout can't be blocked if you control an attacking creature with greater power than it.
Revive {3}{R} ({3}{R}, Exile this card from your graveyard: Create a token that's a copy of this card, except it has no mana cost. Activate this ability only any time you could cast a sorcery.)

Search your library for a basic land card, reveal it, put it into your hand, then shuffle.
Amass Soldiers 1. (Put a +1/+1 counter on an Army you control. It's also a Soldier. If you don't control one, create an 0/0 black Soldier Army creature token first.)

(As an Encounter enters, choose an opponent to protect it. You and others can attack it. When defense counters are removed, create a 0/0 Army token if you don't control one, then put that many +1/+1 counters on a Army you control.)
When Settling of Avaz enters, create two 1/1 white Soldier creature tokens.

(As an Encounter enters, choose an opponent to protect it. You and others can attack it. When defense counters are removed, create a 0/0 Army token if you don't control one, then put that many +1/+1 counters on a Army you control.)
When Settling of Danaj enters, put a +1/+1 counter on each creature you control.

(As an Encounter enters, choose an opponent to protect it. You and others can attack it. When defense counters are removed, create a 0/0 Army token if you don't control one, then put that many +1/+1 counters on a Army you control.)
When Settling of Kaneh enters, create two 1/1 white Soldier creature tokens if you control fewer creatures than an opponent. Then you gain 4 life if you have less life than an opponent.

(As an Encounter enters, choose an opponent to protect it. You and others can attack it. When defense counters are removed, create a 0/0 Army token if you don't control one, then put that many +1/+1 counters on a Army you control.)
When Settling of Nizev enters, look at the top four cards of an opponent's library, exile two of them, and put the rest on the bottom of their library in a random order. You may play those cards for as long as they remain exiled, and mana of any type can be spent to cast them.

(As an Encounter enters, choose an opponent to protect it. You and others can attack it. When defense counters are removed, create a 0/0 Army token if you don't control one, then put that many +1/+1 counters on a Army you control.)
When Settling of Soli enters, reveal the top four cards of your library. You may put a noncreature card from among them into your hand. Put the rest on the bottom of your library in any order.

Flash
Menagerie — When Seven Seas Scourge enters, if there are five or more creature types among creatures you control, counter target spell with mana value 4 or less.

Flash

Once each turn, when another creature you control enters, you may search your library for a card with the same name as that creature, reveal it, put it into your hand, then shuffle.

Destroy target token.

As an additional cost to cast this spell, discard a card or pay {4}.
Destroy target creature.

Destroy target creature. If an opponent lost life this turn, that creature's controller mills five cards.

When Severed Hands enters, surveil 2.
Whenever one or more cards leave your graveyard, tap target creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)

When Sewer Dweller enters or dies, create a 1/1 black Rat creature token with “This creature can't block.”

As long as Sewer Pack is on the battlefield, you may cast spells named Sewer Pack from your graveyard.
Sewer Pack gets +1/+1 for each other creature on the battlefield named Sewer Pack.

Transcend (Activate as a sorcery to gain the next type and a +1/+1 counter.)
Ward {2}
{2}{U}: Demigod — Exchange a card in your hand and a noncreature, nonland card in your graveyard.
{6}{U}: God — Exchange control of two target permanents that share a card type.

When Sha'Iv Cagemage enters, adjudicate. (Create a white Aura enchantment token with enchant creature and “Sacrifice this token: Untap enchanted creature” attached to target creature.)
Whenever an Aura you control enters, you may tap target creature.

Vigilance
Sha'Iv's Emissary gets +1/+1 as long as you control a blue or red permanent.

When Sha'Iv's Scout enters, adjudicate. (Create a white Aura enchantment token with enchant creature and “Sacrifice this token: Untap enchanted creature” attached to target creature.)
Whenever an Aura you control enters, target creature can't block this turn.

Create three 0/0 colorless Reflection creature tokens. Creature tokens you control get +2/+2 until end of turn.