msem-instigator

This spell costs {2} less to cast for each creature that died this turn.
Flying, trample

Destroy target creature if it has the least power or is tied for least power among creatures on the battlefield.
Memento {3}{B}{B} (You may cast this from your graveyard for {3}{B}{B}. If you do, put it onto the battlefield transformed after it resolves. Exile it if it would leave the battlefield or not resolve.)

Desert Storm deals 6 damage to target creature.

({T}: Add {R}, {W}, or {B}.)
Desolate Dominion enters tapped.

Counter target monocolored spell. Its controller loses 2 life.

Menace
{1}{B}, Exile another three cards from your graveyard: Return Determined Explorer from your graveyard to your hand.

Whenever a storied permanent you control enters, you gain 1 life and each opponent loses 1 life. (Enchantments and legendary permanents are storied.)

Converge — Dirty-Pawed Grazer enters with a +1/+1 counter on it for each color of mana spent to cast it.
Dirty-Pawed Grazer can't be blocked by creatures with power 2 or less.

{4}, {T}: Add {W}{U}{B}{R}{G}.

Dismal Backwater enters tapped.
When Dismal Backwater enters, you gain 1 life.
{T}: Add {U} or {B}.

Draw three cards, then exile three cards from your hand. Until end of turn, you may cast nonland cards exiled this way.

Menace
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.)

As an additional cost to cast this spell, discard a card.
Draw two cards. Add one mana of any color.

This spell costs {1} less to cast for each noncreature, nonland permanent you don't control.
When Earthform Pachyderm enters, destroy target noncreature, nonland permanent. Its controller creates a 3/3 green Elephant creature token.

Target player reveals their hand. You choose a nonland card from it. That player discards that card.(Cast a copy of this spell once while this creature is on the battlefield.)

Whenever Eclipse Knight attacks, each opponent loses 1 life. You gain life equal to the life lost this way.
Eclipse Knight gets +1/+1 as long as you have 10 or more life than your starting life total.
Eclipse Knight gets +1/+1 as long as an opponent has 10 or less life than their starting life total.

At the beginning of your end step, draw a card for each card you drew this turn.

Put a +1/+1 counter on target creature you control. Untap that creature.

Copy target instant or sorcery spell you control. You may choose new targets for the copy.

Menace, haste

Choose a nonland permanent type, then destroy all nonland permanents that aren't of the chosen type.

Destroy all nonenchantment permanents. If thirty or more lands were destroyed this way, you win the game.

Converge — Each creature gets -X/-X until end of turn, where X is the number of colors of mana spent to cast Enjoy the Silence.

Flying
Augmented — Whenever you cast a spell, if you've spent {W}{U}{B}{R}{G} to cast spells this turn, put a +1/+1 counter on Enlightened Guardian. It loses this ability and gains “Whenever this creature attacks, draw two cards.”