msem-instigator

Distribute three +1/+1 counters among up to three target creatures you control. Those creatures gain first strike until end of turn.

Whenever you play a land, you may search your library for a land card that shares a subtype with it, put it onto the battlefield tapped, then shuffle.

When Broadside Raider enters the battlefield, create a 1/1 blue and red Pirate creature token with haste.

Two target creatures you control each get +2/+1 until end of turn.

This spell costs {1} less to cast for each artifact and/or enchantment you control.

Brushfire deals 3 damage to target creature. If that creature would die this turn, exile it instead.

Destroy target artifact.
Reprise {R} (As you cast an instant or sorcery spell, you may exile one card with reprise from your graveyard and pay its reprise cost. If you do, add its effects to that spell.)

Choose target creature. Brutal Descent deals 2 damage to each creature other than the chosen creature.
Ferocious — If the chosen creature has power 4 or greater, Brutal Descent deals 4 damage to each creature other than the chosen creature instead.

Whenever you cast a spell for its showcase cost, create a 2/2 blue Drake creature token with flying.

Exile target artifact or enchantment with mana value 4 or less.

Golden age (If you cast an instant or sorcery spell, activated a nonmana ability, and attacked this turn, enter a renaissance for this game.)
Burning of Xiangyin Temple deals 5 damage to target creature or planeswalker. If you're in a renaissance, Burning of Xiangyin Temple deals 3 damage to that permanent's controller.

Target creature gets +4/+2 and gains trample until end of turn.

Deathtouch
Once each turn, you may cast a creature spell from your graveyard by paying life equal to its mana value rather than paying its mana cost.

Bwema, the Ruthless enters the battlefield with your choice of two different counters on it from among menace, first strike, vigilance, and lifelink.

Whenever Byway Bruiser enters or leaves the battlefield, you may have it deal 3 damage to any target.

Vigilance
Whenever Cai Lan, the Chained perseveres, exile target creature an opponent controls until Cai Lan leaves the battlefield. (A creature perseveres when it survives damage.)

Vigilance
When Cai Lan enters the battlefield, exile target nonland permanent an opponent controls with mana value 2 or less. Its controller creates an Idol token.

Destroy all artifacts with mana value X or less. Whenever an artifact is destroyed this way, Calamitous Crash deals 1 damage to any target.

Return up to two target creatures and/or artifacts to their owners' hands. For each permanent returned to its owner's hand this way, forebode. (Create a tapped colorless Omen artifact token with “{T}, Discard a card, Sacrifice this artifact: Draw a card.”)

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — Exile the top card of your library face down.
II — Exile any number of cards from your hand face down.
III — Calamity of Yore deals damage to target creature or planeswalker equal to the number of cards you own in exile. Return all cards exiled with Calamity of Yore to their owners' hands.

({T}: Add {W}.)
As Calcified Dunes enters the battlefield, you may pay 1 life. If you don't, Calcified Dunes enters the battlefield tapped.

Exile target nontoken creature. That creature's controller creates X 1/1 red and white Warrior creature tokens, where X is that creature's mana value.

Destroy up to one target creature with flying or enchantment. 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.”)

Flash
When Cane Dancer enters the battlefield, you may cast target blue instant or sorcery card with mana value 2 from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead.

Canid Simulacrum enters the battlefield with each counter on it from among +1/+1, flying, first strike, deathtouch, lifelink, menace, reach, shield, trample, and vigilance. (If it would be dealt damage or destroyed, remove a shield counter from it instead.)
Whenever a creature enters the battlefield under your control, move two random counters from Canid Simulacrum onto that creature.