msem-instigator

Flying
Whenever an opponent discards a card, you may exile it. If you do, create a 1/1 black Bird creature token with flying and “This creature can't block.”
{B}, Sacrifice three Birds: You may cast a card exiled with Krahen, Dusk's Call without paying its mana cost.

Flying
{U}: Ripclaw Drake gets +1/-1 until end of turn.

Calmed Battleground enters tapped unless you control a Plains.
{T}: Add {B} or {R}.

Other untapped creatures you control have indestructible.
{2}{G}{W}: Target creature gains vigilance until end of turn.

Flying
Death knell — Skullhoarder Dragon gets +2/+0 until end of turn. (As a creature you control dies, trigger one death knell of that creature or another permanent you control.)

Faux, Who Lives for the Hunt enters as a copy of a creature card in your graveyard except it's legendary and has changeling and “When this creature dies, if it didn't have a bounty counter on it, return it to the battlefield with a bounty counter.” (It has “When this creature dies, each opponent draws a card” as long as it has a bounty counter on it.)

Survivors you control have flying.

Purge. You gain 3 life. (To purge, exile two cards that share a type from graveyards. If you do, draw a card.)

Whenever one or more creatures you control attack, you may put a progress counter on Stormcannon Testing.
[PROGRESS 2-3] {T}: Target creature gets +2/+0 until end of turn.
[PROGRESS 4+] {T}: Target creature gets +2/+0 and gains double strike until end of turn.

Enchant creature
When Impassioned Craze enters, draw a card.
Enchanted creature has “{R}: This creature gets +1/+0 until end of turn.”

This spell costs {1} less to cast for each spell you cast this turn.
When Jidai Serpent enters, draw two cards.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
Flash
I — Draw three cards.
II, III — You may cast a spell with mana value less than or equal to the number of lore counters on The Infinite Calls to Marva from your hand without paying its mana cost.

Whenever a land you control enters, put a +1/+1 counter on target creature you control.

Flash
You may cast spells as though they had flash.

Exile target creature with power 3 or less. You gain 3 life.

Whenever a nontoken creature you control dies, create a 1/1 black Skeleton creature token.

Whenever a creature you control enters, you may have target creature get +1/+1 and gain flying until end of turn.

Flash
When Visage of Hope enters, you gain 3 life.

Caress the Fleets deals 1 damage to each creature. Create an Idol token. (It's an artifact with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)

When Clairvoyant Mage enters, scry 2. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

When Benthic Alchemist enters, draw a card, then discard a card, then mill a card.
Whenever you cast an instant or sorcery spell, create a 1/1 colorless Elemental creature token. It gains haste until end of turn.

At the beginning of each combat, harmonize twice. (To harmonize, trigger up to one harmony of a permanent you control.)
Harmony — Target creature gets +1/+1 and your choice of flying, haste, or vigilance until end of turn.

Choose one —
• Destroy target artifact or enchantment.
• Target creature you control explores twice. (Reveal the top card of your library. Put it into your hand if it's a land. Otherwise, put a +1/+1 counter on that creature, then you may put that card in your graveyard.)

Reach
Stampede — Whenever Qasali Quiverguard and a creature with greater power attack, untap all attacking creatures.