msem-instigator

Love Letters enters the battlefield with X stamp counters on it.
Whenever one or more creatures you control deal combat damage to a player, you may remove a stamp counter from Love Letters. If you do, draw a card.

Flying
Whenever Lower Stratosphere Destroyer blocks or becomes blocked by a creature with flying, it gets +2/+2 until end of turn.
Crew 2

{T}: Add {C}.
Motley — {T}: Add one mana of any color. Activate only if there are five or more names among nonland permanents you control.

If a triggered ability of equipped creature would trigger, it triggers an additional time.
Equip {2}

Harvest (You may tap any number of creatures you control as you cast this spell. If you do, reduce this spell's mana cost by their total power.)
{T}, Sacrifice a land: Search your library for a land card and put it onto the battlefield, then shuffle.

When Lumenbay Jailer enters the battlefield, you may exile target nonartifact creature until Lumenbay Jailer leaves the battlefield.

Changeling (This card is every creature type.)
{1}: Another target creature you control gains the creature type of your choice until end of turn.
{1}: Change the text of another target creature you control by replacing all instances of one creature type with the creature type of your choice until end of turn.

Macabre Effigy enters the battlefield with three charge counters on it.
{3}, {T}, Remove a charge counter from Macabre Effigy: Create a 2/2 black Zombie creature token. Activate only as a sorcery.

{X}, {T}, Sacrifice Macabre Ruins: Target creature gets -X/-X until end of turn.

Equipped creature can't be blocked and has ward {3}.
Equip {2}

As Magmatic Torrent enters the battlefield, you may pay 2 life. If you don't, Magmatic Torrent enters the battlefield tapped.
{T}, Sacrifice Magmatic Torrent: Search your library for an Island or Mountain card, put it onto the battlefield, then shuffle.

Magnificent Palace enters the battlefield tapped.
As Magnificent Palace enters the battlefield, choose two colors.
{T}: Add one mana of any of the chosen colors.

{T}, Discard a card: Draw a card.
{1}, {T}, Discard a card: Scry 2, then draw a card.
{4}, {T}, Discard a card: Search your library for a card, put it into your hand, then shuffle.

When Mana Potion enters the battlefield, scry 1, then draw a card.
{2}, {T}, Sacrifice Mana Potion: Add two mana of any one color.

{T}: Add {C}.
{1}, {T}: Add one mana of any color.

When Mana Rose enters the battlefield, you gain 2 life and scry 2.
{1}, {T}: Add one mana of any color.

Manaflux Battery enters the battlefield tapped.
{T}: Add {C}{C}.
{2}, {T}: Untap each other artifact you control.

{T}: Add one mana of any color.

{T}: Add {C}.
{T}, Pay 1 life: Add one mana of any color. Spend this mana only to cast a legendary spell or activate an ability of a legendary permanent.
{3}, {T}, Sacrifice Many-Voiced Tower: Search your library for a legendary card, reveal it, put it into your hand, then shuffle. Activate only if you control five or more differently named lands.

This spell costs {1} less to cast for each differently named creature you control.
Whenever a creature enters the battlefield under your control, if it has a different name than each other creature you control and card in your graveyard, draw a card.

When Marauder's Broadsword enters the battlefield, you may pay {1}. If you do, create a 1/1 white Soldier creature token and attach Marauder's Broadsword to it.
Equipped creature gets +2/+0.
Equip {2}

{T}: Add one mana of any color.
{1}, {T}: You get a glory counter. (You lose glory counters before life. A player with ten or more glory counters wins the game.)

{1}: Look at the top card of your library.
{T}, Sacrifice Marked Coin: You may shuffle your library. Draw a card.

{T}: Add {C}.
Tap five untapped Satrapies you control: Add six mana in any combination of colors.

{3}, {T}, Reveal a card at random from your hand: Draw a card.