msem-instigator

Tithe (As you cast this spell, you may tap three artifacts and/or creatures you control.)
Tap target creature. If this spell's tithe was paid, exile that creature.

Harmony — Exile another target creature until Pretentious Performer leaves the battlefield.
When Pretentious Performer enters the battlefield, harmonize. (Trigger up to one harmony of one permanent you control.)

Enchant creature
Enchanted creature can't attack or block.
Enchanted creature has “{7}: Destroy Proselytize.”

Harmony — Destroy target artifact or enchantment.
When Rejoicing Aristocrats enters the battlefield, harmonize. (Trigger up to one harmony of one permanent you control.)

Destroy target creature with power 4 or greater.

Destroy target artifact or enchantment. You gain 4 life.

Target creature gains flying, double strike, and lifelink until end of turn.

Germinate three times. (To germinate, put a +1/+1 counter on a creature or create a 1/1 green Saproling creature token.)

Enchant creature
When Sporeflow Mantle enters the battlefield, germinate. (Put a +1/+1 counter on a creature or create a 1/1 green Saproling creature token.)
Enchanted creature has vigilance.

Whenever Sporeflow Propagator or another nontoken creature enters the battlefield under your control, germinate. (Put a +1/+1 counter on a creature or create a 1/1 green Saproling creature token.)

Tap up to two target creatures. Germinate. (Put a +1/+1 counter on a creature or create a 1/1 green Saproling creature token.)

Flying
When Stratusform Seraph enters the battlefield, you may return target creature you control to its owner's hand.

{2}{R}: Thespian Soldier gains first strike until end of turn.

Creatures with power 4 or greater can't attack or block unless their controller pays {2} for each of those creatures.

Harmony — Germinate. (Put a +1/+1 counter on a creature or create a 1/1 green Saproling creature token.)
When Woopip Chef enters the battlefield, harmonize. (Trigger up to one harmony of one permanent you control.)

When Woopip Sproutling enters the battlefield, germinate. (Put a +1/+1 counter on a creature or create a 1/1 green Saproling creature token.)

Counter target spell unless its controller pays {1}.
Create a colorless artifact token named Lotus Petal with “{T}, Sacrifice this artifact: Add one mana of any color.”

When you cast your third noncreature spell each turn, transform Aspiring Rascals.

Whenever Marshback Knights becomes the target of a spell or ability an opponent controls, counter it unless they pay {3}.
{1}{U}: Marshback Knights gains flying until end of turn.

Flying
Harmony — Until the end of your next turn, you may cast target instant or sorcery card from your graveyard. If that card would be put into your graveyard, exile it instead.
When Aven Acoustimancer enters the battlefield, harmonize. (Trigger up to one harmony of one permanent you control.)

Enchant creature
Enchanted creature has base power and toughness 1/1 and is a Frog in addition to its other types.
When enchanted creature deals damage to a player, sacrifice Belittle.

Tap up to two target creatures. Those creatures don't untap during their controller's next untap step.

Flying
When Bogsnatcher Drake enters the battlefield, create a colorless artifact token named Lotus Petal with “{T}, Sacrifice this artifact: Add one mana of any color.”

Return target nonland permanent you control and target nonland permanent you don't control to their owners' hands.