msem-instigator

Molting Abomination can't be blocked by creatures with power 2 or less.
Whenever Molting Abomination deals combat damage to a player or planeswalker, create a tapped 3/2 colorless Horror creature token. Put a stun counter on that token. (If a permanent with a stun counter would become untapped, remove one from it instead.)

Trample
Wanderlust — Whenever Akkrixian Assailants attacks, if you control four or more differently named lands, put a +1/+1 counter on it.

When Journey to the Otherworlds enters, draw a card, then choose a creature card name.
Whenever a creature you control with the chosen name attacks, you may aetherize it. (To aetherize, create a token that's a copy of it, then exile that token.)

When Backwoods Cultivator enters, put a +1/+1 counter on target creature you control.
When Backwoods Cultivator dies, proliferate. (You choose any number of permanents and/or players with counters on them, then give each another kind of a counter already there.)

Destroy target creature or planeswalker. Each player loses life equal to that permanent's mana value.

Harpoon Launching deals 3 damage to any target. Create a 1/1 red Goblin creature token.

Whenever another Knight or Soldier you control enters, target player loses 1 life.

Attacking creatures you control have “{R}: This creature gets +1/+0 until end of turn.”
Armed — Whenever Forgeborn Barbarian attacks, add {R} for each equipped creature you control.

Flying
When a creature you control scavenges Carrion Courier, put a flying counter on that creature.
Scavenge {2}{B} ({2}{B}, Exile this card from your graveyard: Put a number of +1/+1 counters equal to this card's power on target creature. Scavenge only as a sorcery.)

Permanents entering the battlefield don't cause abilities of permanents to trigger.

{T}: Add {G}.
{T}: Add {G}{G}. Activate only if you control an Elemental.

(Activate each submodule once as a sorcery. When this enters, activate one submodule for free.)
{B}{B}{B}: Ambitous
Search your library for a card, put it into your hand, then shuffle. You lose 3 life.
{B}{B}{B}: Ruthless
Destroy target creature or planeswalker.
{B}{B}{B}: Determined
Power Module gains “At the beginning of your upkeep, you draw a card and you lose 1 life.”

Escalate {1}{W} (Pay this cost for each mode chosen beyond the first.)
Choose one or both —
• Return up to two target creature cards from your graveyard to your hand.
• Abound, abound. (To abound, you may cast a spell that costs less than this from your hand without paying its mana cost.)

Deception {1}{B} ({1}{B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever Nightfall Infiltrator deals combat damage to a player, that player discards a card.

Search your library for a card, exile it face down, then shuffle. For as long as that card remains exiled, you may cast it. It costs {2} more to cast this way if you don't control a legendary creature as you cast that spell.

Destroy all artifacts and enchantments with mana value 1 or less.
Draw a card.

Wu Xing (Add effects based on the number of colors of mana spent to cast this spell.)
1 | Target creature's owner puts it on the top or bottom of their library.
3 | Return a creature card from your graveyard to your hand.

Until end of turn, target creature gets +1/+0 and gains “Whenever this creature is dealt damage, exile that many cards from the top of your library. Until end of turn, you may play those cards.”

When Assurance of Finality enters, you may discard a card. If you do, draw two cards.
{1}, Sacrifice Assurance of Finality: Creatures you control gain haste until end of turn.

Flying
Vanguard — Whenever a creature you control attacks alone, it gains first strike until end of turn.

Vanishing 3 (This permanent enters with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
Whenever a time counter is removed from a permanent you control, Carve a Path deals 1 damage to any target.

When Hollowflesh Ghoul dies, create a 1/1 black Skeleton creature token.

Imperial Marketplace enters with a charge counter on it.
{T}: Add {C}.
{T}, Remove a charge counter from Imperial Marketplace: Put a +1/+1 counter on target creature you control.

You may have Graveborn Usurper enter as a copy of any creature card in a graveyard, except it has “{2}{U}{B}, Exile a creature card from a graveyard: Graveborn Usurper becomes a copy of the exiled card, except it has this ability.”