msem-instigator

Aeren Hellfire deals 4 damage to any target.
You may draw a card. If you do, discard a card.

Flying
Clerics you control are Angels in addition to their other types.
Attacking Angels you control get +1/+0.

Font of Sorrows and other permanents you control entering the battlefield cause their death knell to trigger.
Death knell — Draw a card. (As a creature you control dies, trigger one death knell of that creature or another permanent you control.)

Other creatures you control get +1/+0.
{R}{W}: Create a 1/1 red and white Warrior creature token. That token gains haste. Exile it at the beginning of the next end step. Activate only as a sorcery.

{T}: Add {G} or {U}.
{G}{U}, {T}: Return target creature you control to its owner's hand.

Enchant player
Creatures enchanted player controls get +0/+1.

When Legacy Warmask enters, return target creature card with mana value 2 or less from your graveyard to the battlefield, then attach Legacy Warmask to that creature.
Equipped creature gets +1/+1.
Equip {1}

Haste
When Greenwood Outrider enters, creatures you control gain trample and get +X/+X until end of turn, where X is the number of storied permanents you control. (Enchantments and legendary permanents are storied.)

Enchant opponent
Cards in enchanted player's graveyard lose all abilities and all names.
If enchanted player would mill one or more cards, they instead mill that many cards plus X, where X is the number of Curses attached to them.

As Mercantile Accords enters, choose a number.
Whenever an opponent casts a spell with the chosen mana value, you draw a card and create a Treasure token.

When Still-Smoke Sojourners enters, remove all counters from target player or permanent. That player or that permanent's controller loses life equal to the number of counters removed this way.

Haste
Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.)
Legendary creatures you control have haste.

{G/U}: Pangoling gains hexproof until end of turn.
{G/U}: Move a counter from target creature you control onto Pangoling.
{G/U}: Whenever Pangoling deals combat damage to a player this turn, draw a card. Activate only once each turn.
{1}: Pangoling gets +1/-1 or -1/+1 until end of turn.

At the beginning of your upkeep, create a Treasure token. Then if you control fifteen or more artifacts, creatures, and/or enchantments, you win the game. (Treasure tokens are artifacts with “{T}, Sacrifice this artifact: Add one mana of any color.”)

(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 Essence Rehabilitator perseveres, you may return target permanent card with mana value 2 or less from your graveyard to the battlefield. (A creature perseveres when it survives damage.)

Persistent glitch {1}. Spend only mana of a color that hasn't been spent this way to activate this ability. ({1}: Permanently remove one [restriction] from this permanent.)
[+1]: You [and each opponent] may scry 2. Draw a card[, then discard a card.]
[–3]: Exile target nonland permanent [with mana value 4 or less]. [Its controller creates a Treasure token.]
[–6]: Create five 2/2 blue Elemental creature tokens with flying [and -1/-1 counters on them].

When Hila Okunos enters, look at the top six cards of your library. You may reveal an Aura or Aurashaper card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.
Whenever another nontoken Aura or Aurashaper you control enters, create a token that's a copy of it.

When Seven Deadly Sins has seven or more sin counters on it, sacrifice it.
{B}{B}, Put a sin counter on Seven Deadly Sins: Destroy target creature. This ability costs {1} more to activate for each sin counter on Seven Deadly Sins.

Flying
Whenever Rubble Scavenger deals combat damage to a player, you may return target artifact card with mana value 4 or less from your graveyard to the battlefield.

When Shifty Squirrel enters, you gain 3 life.
Sacrifice a creature: Transform Shifty Squirrel.

Reach
{2}{G}: Rei's Ranger gets +2/+0 until end of turn.

At the beginning of your upkeep, mill a card.
{1}, Exile three cards from your graveyard: Put a -1/-1 counter on target creature.

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.

{1}{R}, Discard a card: Draw a card.
{R}: You may put a creature card from your hand onto the battlefield. That creature gains haste. Activate only if twenty or more cards are in your graveyard.