msem-instigator

{3}{U}, {T}: Copy target instant or sorcery spell you control. You may choose new targets for the copy.

When Bug Catcher enters, create a 1/1 green Insect creature token.
Whenever a nontoken Insect you control dies, create a 1/1 green Insect creature token.

First strike
Ascend {1}{B} ({1}{B}: Exile this creature, then return it to the battlefield transformed. Ascend only as a sorcery.)

Whenever Burning Hart deals combat damage to a player, it deals that much damage to up to one target planeswalker that player controls.

Haste
Sacrifice another creature: Bygone Aristocrat gains indestructible until end of turn.

When Byron, Unlikely Hero enters, put a +1/+1 counter on each other Citizen or Peasant you control.
Whenever a nontoken creature you control with a +1/+1 counter on it dies, create a 1/1 white Peasant creature token.

Haste
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.)

Mark (Whenever this creature attacks, mark target creature until end of turn.)
Whenever a marked creature you don't control blocks, Cadalon Chemist deals 1 damage to that creature.

Whenever you investigate for the first time each turn, investigate an additional time.
{T}, Sacrifice an artifact: Cadalon Inspector deals 2 damage to any target.

As Calamity Apparition enters, choose fade or linger.
When Calamity Apparition dies,
• Fade — You gain 2 life and scry 2.
• Linger — Put a +1/+1 counter on target creature you control.

Flying
When Calamity Harbinger enters, it deals 4 damage to up to one target creature or planeswalker.

Whenever Calamity Scholar attacks, if you control an artifact, put a +1/+1 counter on it.

This spell costs {1} less to cast for each creature you control.
Trample
While you're searching your library, you may cast Camouflaged Sprareos from your library.

Hexproof
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Trample
{2}{G}{G}: Put Canal Lurker from its owner's graveyard on top of its owner's library.

Haste
Cycling {2} ({2}, Discard this card: Draw a card.)

Flash
Harmony — You may tap or untap target creature.
When Captivating Jester enters, harmonize. (Trigger up to one harmony of one permanent you control.)

Haste
When Caravan Engulfer enters, creatures you don't control can't block this turn.

When Caravan Guard enters, for each kind of counter on target permanent, put another counter of that kind on it or remove one from it.

Sacrifice Caravan Merchant: Add {R}{R}.

Wither (This deals damage to creatures in the form of -1/-1 counters.)

Flash (You may cast this spell any time you could cast an instant.)
Flying
Tapped creatures you control have hexproof.

When Carrion Gourmet enters, each player sacrifices a creature.
Whenever another creature dies, put a +1/+1 counter on Carrion Gourmet.

This spell costs {1} less to cast for each creature card in your graveyard.
Trample

If a source would deal damage to a creature in Cascading Zhenzu's pack, prevent 1 of that damage. (Two or more creatures you control with equal power are in a pack.)
{U}: You may switch Cascading Zhenzu's power and toughness until end of turn.