msem-instigator

Whenever Caldera Crawlers attacks, you may sacrifice a land or exile a land card from your graveyard. If you do, target creature gets +1/+1 and gains menace until end of turn.

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

Captain Fina Redtail can't be blocked as long as you control another attacking Pirate.
Whenever Captain Fina Redtail deals combat damage to a player, you may pay {2}. If you do, create a 2/1 black and red Cat Pirate creature token with menace.

Catalina's Turf enters tapped.
When Catalina's Turf enters, you may mill two cards.
{T}: Add {B} or {R}.

Trample
Chained Ravager can't attack or block unless a player has lost life this turn.

Menace
Creatures you control with mana value 1 get +2/+0 and have menace.

(Activate each submodule once as a sorcery. When this enters, activate one submodule for free.)
{2}{R}: Anarchy
Exile the top three cards of your library. You may cast up to one enchantment spell and play up to one other card exiled this way until the end of your next turn.
{2}{B}: Despair
Each cursed opponent sacrifices a creature.
{1}{B}{R}: Strife
Chaos Module gains “At the beginning of your end step, each cursed opponent loses life equal to the number of Curses attached to them.”

Charbroiled Core enters tapped unless you have two or more opponents.
{T}: Add {B} or {R}.

Haste
Claret Gorger can't block.
Unveil {2}{B}{R} ({2}{B}{R}: Transform this. Unveil only as a sorcery.)

Whenever a creature enters under an opponent's control, you may have that player lose 1 life.
Unveil {2}{B}{R} ({2}{B}{R}: Transform this. Unveil only as a sorcery.)

Clocktower Hideout enters tapped.
When Clocktower Hideout enters, look at the top card of your library. You may put it into your graveyard.
{T}: Add {B} or {R}.

Corsair Sellsword can't block.
Whenever you foretell a card or cast a foretold spell, you may return Corsair Sellsword from your graveyard to your hand.

For each creature you control, create a token that's a copy of it. They gain haste. Sacrifice them at the beginning of the next end step.

({T}: Add {B} or {R}.)
Whenever Crumbling Precipice becomes tapped, you lose 1 life unless you control two or more basic lands.

Return all creature cards from your graveyard to the battlefield. Those creatures gain haste until end of turn.
At the beginning of the next end step, you lose the game.

Return target creature or planeswalker card with mana value 3 or less from your graveyard to the battlefield. If it’s an Eli planeswalker, put a loyalty counter on it. (Cast a copy of this spell once while this planeswalker is on the battlefield.)

Breach (Whenever this deals combat damage to a player, you may have it become an Aura Curse until your next turn. Attach it to that player.)
At the beginning of your end step, you may choose a cursed opponent. If you do, draw a card unless that player pays 2 life for each Curse attached to them.

Dawson's Negotiations deals 3 damage to any target. Players discard cards equal to the amount of excess damage dealt to a permanent they control this way.

Haste
Whenever another creature you control dies, each opponent loses 1 life and you gain 1 life.

First strike
Whenever Deprived Div deals combat damage to an opponent, end the turn. (Creatures without first strike won't deal damage this turn.)

Menace
Other artifact creatures you control have menace.
{2}{B}{R}: Salvage an artifact or creature card. (Exile one from your graveyard until this creature leaves the battlefield. Whenever this creature deals combat damage to a player, put a card it salvaged into your hand.)

Descended Fissure enters tapped.
{T}: Add {B} or {R}.
Morph {2} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Dire Dive enters tapped unless another player controls a land that could produce {B} or {R}.
{T}: Add {B} or {R}.

Flying, first strike, haste
Whenever Doombringer Dragon attacks, you may sacrifice another creature. If you do, Doombringer Dragon gets +3/+0 until end of turn.

Menace, haste
Whenever another creature dies, you get a blood counter.
{B}{R}, Pay two blood counters: Return Dthan, Who Bloodies the Sands from your graveyard to the battlefield.