msem-instigator

({T}: Add {R}.)
Moon of the Lingering Day enters tapped.
{1}{R}, {T}: Scry 1.

When Unmarked Vials enters, create a Vial token. (It's an artifact with “{1}, Sacrifice this and another permanent: Draw a card. Activate only during your turn.”)
{1}, {T}: Add one mana of any color.

When Ravenous Abomination enters, choose one —
• Create two Treasure tokens.
• Put a +1/+1 counter on Ravenous Abomination.

Haste
Whenever another creature you control enters or attacks, Epitome of Force gets +1/+0 until end of turn. If this is the third, sixth, or ninth time this ability has triggered this turn, Epitome of Force gains your choice of first strike, menace, or trample until end of turn.

Flying, double strike
Whenever Marzela Falkenrath deals combat damage to a player, create a 1/1 black and red Vampire creature token with menace.
{2}{B}: Vampires you control gain lifelink until end of turn.

First strike
At the beginning of your end step, if Emberslash Werewolf didn't attack this turn, transform it.

{T}, Sacrifice Escape Hatch: Return target creature you control to its owner's hand.

Flash
Flying
When Champion of the Provinces enters, return any number of other permanents you control to their owner's hands.

At the beginning of your upkeep, mill two cards.

Trample
At the beginning of your upkeep, if your fealty to Forests is five or greater, transform Hand of the Harvest. (Each Forest you control counts towards your fealty to Forests.)

Bloodleaf Butcher gets +1/+0 and has deathtouch as long as five or more cards are in your graveyard.

Whenever one or more +1/+1 counters are put on a creature you control, you may search your library for a creature card, reveal it, put it into your hand, then shuffle.

Draw two cards.
Rerun (If you cast this from your hand, exile it as it resolves. Whenever a creature you control dies, you may cast this card from exile without paying its mana cost.)

Equipped creature gets +1/+1 and has haste.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

When Rubble Seer enters, you may sacrifice a land or exile a land card from your graveyard. If you do, exile the top card of your library. Until the end of your next turn, you may play that card.

Creatures you control without counters on them get +2/+2.
Whenever you attack, target attacking creature gains trample until end of turn.
At the beginning of your end step, sacrifice this enchantment unless you put two -1/-1 counters on a creature you control.

Calmed Battleground enters tapped unless you control a Plains.
{T}: Add {B} or {R}.

When Bustling Bazaar enters, return target artifact, instant, or sorcery card from your graveyard to your hand.
Sacrifice a nontoken artifact: Create two tapped Treasure tokens.

Private Library enters tapped.
When Private Library enters, look at the top card of your library. You may put it into your graveyard.
{T}: Add {W} or {U}.

{T}: Choose a color of a card in your graveyard. Add one mana of that color.

Target creature gets +3/+3 and gains haste until end of turn.

Flash
Whenever Whimsical Dancer enters or is exerted, target creature gets +1/+0 and gains first strike until end of turn.
You may exert Whimsical Dancer as it attacks. (An exerted creature won't untap during your next untap step.)

Sacrifice a creature. When you do, draw two cards. (Then exile this card. You may cast the creature later from exile.)

First strike
Whenever a creature dealt damage by Mournful Newborn this turn dies, transform Mournful Newborn.

Art of war — At the beginning of your end step, if Kowareta Scrounger dealt damage to an opponent this turn, you may search your library for an artifact card, reveal it, put it into your hand, then shuffle.