msem-instigator

Harmony — Untap target permanent.
Whenever you cast an instant or sorcery spell, harmonize. (Trigger up to one harmony of one permanent you control.)

When Sensational Festivities enters the battlefield or at the beginning of your upkeep, you may draw a card. If you do, each opponent may draw a card, then discard a card.

Enspirit (As you cast this spell, you may exile a nonenchantment creature you control until this leaves the battlefield or fails to resolve. Reduce this spell's cost by the exiled card's mana value.)
When Soul Trapper enters the battlefield, tap target creature an opponent controls. That creature doesn't untap during its controller's untap step for as long as you control Soul Trapper.

Enchant permanent
When Tempted by Lotuses enters the battlefield, enchanted permanent's owner creates three colorless artifact tokens named Lotus Petal with “{T}, Sacrifice this artifact: Add one mana of any color.”
You control enchanted permanent.

Draw X cards. Then if X is 2 or greater, you may discard any number of cards. For each card discarded this way, create a colorless artifact token named Lotus Petal with “{T}, Sacrifice this artifact: Add one mana of any color.”

Enspirit (As you cast this spell, you may exile a nonenchantment creature you control until this leaves the battlefield or fails to resolve. Reduce this spell's cost by the exiled card's mana value.)
You may have Witch of Shifting Waters enter the battlefield as a copy of any creature on the battlefield, except it's an enchantment in addition to its other types.

Flash
When Witch's Invocation enters the battlefield, draw a card.
You may cast spells as though they had flash.

Enspirit (As you cast this spell, you may exile a nonenchantment creature you control until this leaves the battlefield or fails to resolve. Reduce this spell's cost by the exiled card's mana value.)
Zoulev Envoy can't be blocked.

As an additional cost to cast this spell, sacrifice an artifact.
Draw three cards.

Target creature gets -2/-0 until end of turn. If that creature is tapped, draw a card.

Return up to two target creature cards from your graveyard to your hand.

Exile target creature or planeswalker and all other creatures its controller controls with the same name as that permanent. Search its controller's graveyard, hand, and library for any number of nonland cards with the same name as that permanent and exile them. Then that player shuffles.

When Bayou Courier enters the battlefield, you may pay 2 life. If you do, create a 3/2 green Crocodile creature token with trample.

Deathtouch
When Bitterheart Bokor leaves the battlefield, you may search your library for a Curse card, reveal it, put it into your hand, then shuffle.

When target creature dies this turn, return it to the battlefield under its owner's control. When you do, germinate. (Put a +1/+1 counter on a creature or create a 1/1 green Saproling creature token.)

Whenever Boghex Witch deals combat damage to a cursed player, that player loses the game.
{2}{B}: Look at the top five cards of your library. You may reveal a Curse card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Enchant creature
When enchanted creature dies, return that card to the battlefield under your control.

Enchant opponent
When Curse of Bleeding enters the battlefield, enchanted player loses 2 life.
Enchanted player can't gain life.

Enchant opponent
Whenever a creature enters the battlefield under enchanted player's control, that player loses 1 life and you gain 1 life.

Enchant opponent
At the beginning of enchanted player's end step, they discard a card.

Enchant opponent
At the beginning of enchanted player's upkeep, you create a 3/2 green Crocodile creature token with trample if enchanted player has 10 or less life. Otherwise, they lose 2 life.

Flying
When Greater Swooprat enters the battlefield, creatures your opponents control get -1/-1 until end of turn.

When Grim Festivities enters the battlefield or at beginning of your upkeep, you may return a creature card from your graveyard to the battlefield under your control. If you do, each opponent may return a creature card from their graveyard to their hand.

Enchant opponent
When Grisly Hunger enters the battlefield, enchanted player's life total becomes 10.
At the beginning of enchanted player's end step, they sacrifice a creature. If they do, they lose life equal to that creature's power.

Enspirit (As you cast this spell, you may exile a nonenchantment creature you control until this leaves the battlefield or fails to resolve. Reduce this spell's cost by the exiled card's mana value.)
When Kantra of Avarice enters the battlefield, target player draws two cards and loses 2 life.