msem-instigator

Create a 2/2 blue Jellyfish enchantment creature token with flying.
Flashback {4}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Lionize {1}{G} ({1}{G}, Exile this card from your hand: Put a +1/+1 counter on target creature and it gains the following ability until end of turn. You may cast this card on a later turn from exile.)
This creature assigns combat damage equal to its toughness rather than its power.

({T}: Add {B} or {R}.)
Molten Falls enters tapped.
{1}, {T}: Add {B}{B} or {R}{R}.

Flying, first strike, haste
Whenever you gain life, you may have Gisela, Blade of Morning deal that much damage to any target. Do this only once each turn.

Whenever Lampad of Anathemas or another enchantment you control enters, target creature an opponent controls gets -1/-1 until end of turn.

Target creature gains double strike and trample until end of turn. (Then exile this card. You may cast the creature later from exile.)

Sodden Path enters tapped unless you control one or fewer other lands.
{T}: Add {G} or {U}.
Cycling {2} ({2}, Discard this card: Draw a card.)

As long as Champion of Ideals has one or more +1/+1 counters on it, it's an Angel with base power and toughness 4/4, flying, vigilance, and lifelink.
{3}{G}: Judge target creature you control. Activate only as a sorcery. (Honor it by putting a +1/+1 counter on it or condemn it by sacrificing it to draw a card.)

Deathtouch
Foresight — Whenever you draw your second card each turn, each opponent loses 1 life and you gain 1 life.
{1}{B}: Qalam Surveyor gains menace until end of turn.

Haste
{4}{R}: Monstrosity 2. (If this creature isn't monstrous, put two +1/+1 counters on it and it becomes monstrous.)

Return target creature to its owner's hand.
Kindle 1—{U} ({U}, Exile this card from your graveyard: Create a 1/1 colorless Elemental creature token. Kindle only as a sorcery.)

Concord — You may cast this spell as though it had flash if there are four or more card types among permanents you control.
When Krill-Clan Guardian enters, it fights up to one other target creature. If that creature would die this turn, return it to its owner's hand instead.

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

Distribute two -1/-1 counters among one or two target creatures.

Look at target opponent's hand, then fateseal 1. (To fateseal 1, look at the top card of an opponent's library, then you may put it on the bottom of that player's library.)

Indestructible
As long as your devotion to black and green is less than seven, Pharika isn't a creature.
Creatures your opponents control get -1/-1.
{2}{B}{G}: Return target creature card from your graveyard to your hand. You gain 2 life.

Return target creature card with mana value 3 or less from your graveyard to the battlefield. It gains haste until end of turn.
Monument {3}{B}{R} (You may cast this transformed from your graveyard for its monument cost. Exile it if it would leave the battlefield or not resolve.)

Trample
Whenever Horrific Progenitor deals damage to a player, for each damage dealt, that player loses 3 life unless they sacrifice a nonland permanent or discard a card.

Flash
When Charnel Legion enters, destroy target creature or planeswalker an opponent controls that was dealt damage this turn. When you do, you gain 2 life.

When Faulty Lock enters or is put into a graveyard from the battlefield, choose a creature you control. Whenever that creature deals combat damage to a player this turn, draw a card.
{2}{U}: Sacrifice Faulty Lock. Activate only as a sorcery.

Menace (This creature can't be blocked except by two or more creatures.)
{1}{R}: Wandering Goliath gets +1/+0 until end of turn.

Target creature you control gains protection from everything until end of turn.

When Forbidden Shiangshi Arts enters, each player mills three cards.
{2}{B}: Exile target creature card from a graveyard. Create a tapped token that's a copy of that card, except it has “When this creature deals damage, sacrifice it.”

Destroy target tapped creature.
Orchestrate {W} (You may exile this card from your hand anytime you could cast a sorcery for its orchestrate cost. When you next resolve a spell, you may cast this from exile without paying its mana cost.)

Enchant creature
Enchanted creature gets +1/+1 and has flying and prowess.