msem-instigator

Whenever another creature enters the battlefield under your control, you may have it gain haste. If you do, return it to its owner's hand at the beginning of the next end step.

Menace
When Bogborn Exorcist enters the battlefield, you may discard a card. When you do, exile target instant or sorcery card with mana value 3 or less from an opponent's graveyard. Copy that card. You may cast the copy without paying its mana cost.

Bogchomper Juggernaut attacks each combat if able.
Bogchomper Juggernaut can't be blocked by Fungus, Saprolings, Plants, or Insects.

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.

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.”

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

Equipped creature has menace.
Equip {0} ({0}: Attach to target creature you control. Equip only as a sorcery.)

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

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

Harmony — Create a colorless artifact token named Lotus Petal with “{T}, Sacrifice this artifact: Add one mana of any color.”
When Bouquet Singer enters the battlefield, harmonize. (Trigger up to one harmony of one permanent you control.)

Sacrifice another creature: Brash Hunter deals 1 damage to any target.
At the beginning of your end step, if three or more creatures died this turn, transform Brash Hunter.

{T}: Add {C}.
Crew 3 (Tap any number of creatures you control with total power 3 or greater: This Vehicle becomes an artifact creature until end of turn.)

Tithe (As you cast this spell, you may tap three artifacts and/or creatures you control.)
Any opponent may have you draw three cards. If they don't, Burning Revelations deals 5 damage to them. Then if you cast this spell and its tithe was paid, copy it twice.

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

Tithe (When this creature enters the battlefield, you may tap three other artifacts and/or creatures you control.)
When Cataclysmic Preacher's tithe is paid, return target instant or sorcery card from your graveyard to your hand.

Harmony — Tap target creature. That creature doesn't untap during its controller's next untap step.
When Chilling Musician enters the battlefield, harmonize. (Trigger up to one harmony of one permanent you control.)

Target creature gets +4/+4 until end of turn. Create a colorless artifact token named Lotus Petal with “{T}, Sacrifice this artifact: Add one mana of any color.”

Look at the top five cards of your library. You may reveal an enchantment or land card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Counter target spell. Return up to one target permanent you control to its owner's hand.

Harmony — Target player mills four cards.
When Creeping Pianist enters the battlefield, harmonize. (Trigger up to one harmony of one permanent you control.)

When Croakfolk Troubadour enters the battlefield, draw a card.

Enchant creature
When Crown of Spores enters the battlefield, germinate. (Put a +1/+1 counter on a creature or create a 1/1 green Saproling creature token.)
Enchanted creature gets +2/+2.

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

Enchant opponent
Whenever enchanted player plays a land, you may put a land card from your hand onto the battlefield.